WJ engine codes



After my first tune-up on my '99 WJ I experienced a miss and
shudder.  My first guess was that one of the engine coils I
had taken out by force had suffered from the experience. After
consulting with the folks on the WJ list on yahoogroups I learned
of a technique that works for Chrysler products:

you turn the key on/off/on/off/on  - then WATCH the odometer,
the codes will appear there.


quick time movie: http://johnmeister.com/jeep/sj/WJ/tech/WJ-engine-codes/error-codes.mov 

You can't see it clearly in the video, but the codes are, and mean:

         P0305 = #5 IGNITION COIL 


         P1685 is an Invalid SKIM key.  I disconnected part
         of the aftermarket alarm system that was going to a
         coil wire... 
	I reconnected the wire and was able to start the car.   
	I did get that key light with the wire disconnected.




 dash test


 key off
 hold trip reset down
 key on
 watch the blinking lights and needles flail about


quick time movie: http://johnmeister.com/jeep/sj/WJ/tech/WJ-engine-codes/dash-test.mov 


 coil swap

Error code points to #5 coil.


New coil on the right, old on the left, p/n on box:
($31.15 list price January 2002 - found it at a Dodge dealer!)


Looking into the area where the coil was removed:


Looking down into the spark plug hole:

WJ Diagnostic Trouble Codes

Trouble Codes

Check Engine light

OPERATION

As a functional test, the Check Engine Light illuminates at key-on before engine cranking. Whenever the Powertrain Control Module (PCM) sets a Diagnostic Trouble Code (DTC) that affects vehicle emissions, it illuminates the Check Engine Light. If a problem is detected, the PCM sends a message over the J1850 Bus to the instrument cluster to illuminate the lamp. The PCM illuminates the MIL only for DTC's that affect vehicle emissions. The MIL stays on continuously when the PCM has entered a Limp-In mode or identified a failed emission component or system. The MIL remains on until the DTC is erased. Refer to the Diagnostic Trouble Code charts in this group for emission related codes.
Also, the Check Engine Light either flashes or illuminates continuously when the PCM detects active engine misfire. Refer to Misfire Monitoring in this section. Additionally, the PCM may reset (turn off) the MIL when one of the following occur:

PCM does not detect the malfunction for 3 consecutive trips (except misfire and fuel system monitors).
PCM does not detect a malfunction while performing three successive engine misfire or fuel system tests. The PCM performs these tests while the engine is operating within ±375 RPM of and within 10 % of the load of the operating condition at which the malfunction was first detected.

DIAGNOSTIC TROUBLE CODES DESCRIPTION

A Diagnostic Trouble Code (DTC) indicates the PCM has recognized an abnormal condition in the system.
Remember that DTC's are the result of a system or circuit failure, but do not directly identify the failed component or components.

OPERATION

BULB CHECK

Each time the ignition key is turned to the ON position, the malfunction indicator (check engine) lamp on the instrument panel should illuminate for approximately 2 seconds then go out. This is done for a bulb check.

OBTAINING codes

Cycle the ignition key On - Off - On - Off - On within 5 seconds
The Odometer will show the P-code for the DTC code number.

DIAGNOSTIC TROUBLE CODE DESCRIPTIONS
GENERIC SCAN TOOL CODE	DRB SCAN TOOL DISPLAY	DESCRIPTION OF DIAGNOSTIC TROUBLE CODE
P-code suffixes (M) Check Engine Lamp (Check Engine Light) will illuminate during engine operation if this Diagnostic Trouble Code was recorded. (G) Generator Lamp Illuminated within 5 seconds.
P0030	1/1 02 Sensor Heater Relay Malfunction
P0036	112 02 Sensor Heater Relay Malfunction
P0106(M)	Barometric Pressure Out of Range	MAP sensor input voltage out of an acceptable range detected during reading of barometric pressure at key-on.
P0107(M)	Map Sensor Voltage Too Low	MAP sensor input below minimum acceptable voltage.
P0108(M)	Map Sensor Voltage Too High	MAP sensor input above maximum acceptable voltage.
P0112(M)	Intake Air Temp Sensor Voltage Low	Intake air (charge) temperature sensor input below the minimum acceptable voltage.
P0113(M)	Intake Air Temp Sensor Voltage High	Intake air (charge) temperature sensor input above the maximum acceptable voltage.
P0116	Coolant Temp. Sensor Performance	A rationality error has been detected in the coolant temp sensor
P0117(M)	ECT Sensor Voltage Too Low	Engine coolant temperature sensor input below the minimum acceptable voltage
P0118(M)	ECT Sensor Voltage Too High	Engine coolant temperature sensor input above the maximum acceptable voltage
P0121(M)	TPS Voltage Does Not Agree With MAP	TPS signal does not correlate to MAP sensor signal.
P0122(M)	Throttle Position Sensor Voltage Low	Throttle position sensor input below the acceptable voltage range
P0123(M)	Throttle Position Sensor Voltage	Throttle position sensor input above the maximum High acceptable voltage
P0125(M)	Closed Loop Temp Not Reached	Time to enter Closed Loop Operation (Fuel Control) is excessive
P0130	1/1 02 Sensor Heater Relay Malfunction
P0131(M)	1/1 02 Sensor Shorted To Ground	Oxygen sensor input voltage maintained below normal operating range
P0030	1/1 02 Sensor Heater Relay Malfunction
P0036	112 02 Sensor Heater Relay Malfunction
P0106(M)	Barometric Pressure Out of Range	MAP sensor input voltage out of an acceptable range detected during reading of barometric pressure at key-on.
P0107(M)	Map Sensor Voltage Too Low	MAP sensor input below minimum acceptable voltage.
P0108(M)	Map Sensor Voltage Too High	MAP sensor input above maximum acceptable voltage.
P0112(M)	Intake Air Temp Sensor Voltage Low	Intake air (charge) temperature sensor input below the minimum acceptable voltage.
P0113(M)	Intake Air Temp Sensor Voltage High	Intake air (charge) temperature sensor input above the maximum acceptable voltage.
P0116	Coolant Temp. Sensor Performance	A rationality error has been detected in the coolant temp sensor
P0117(M)	ECT Sensor Voltage Too Low	Engine coolant temperature sensor input below the minimum acceptable voltage
P0118(M)	ECT Sensor Voltage Too High	Engine coolant temperature sensor input above the maximum acceptable voltage
P0121(M)	TPS Voltage Does Not Agree With MAP	TPS signal does not correlate to MAP sensor signal.
P0122(M)	Throttle Position Sensor Voltage Low	Throttle position sensor input below the acceptable voltage range
P0123(M)	Throttle Position Sensor Voltage	Throttle position sensor input above the maximum High acceptable voltage
P0125(M)	Closed Loop Temp Not Reached	Time to enter Closed Loop Operation (Fuel Control) is excessive
P0130	1/1 02 Sensor Heater Relay Malfunction
P0131(M)	1/1 02 Sensor Shorted To Ground	Oxygen sensor input voltage maintained below normal operating range
P0141	1/1 02 Sensor Relay	Oxygen sensor relay bad
P0147	1/3 02 Sensor Heater Failure	Oxygen sensor heater element malfunction.
P0151(M)	2/1 02 Sensor Shorted To Ground	Oxygen sensor input voltage maintained below normal operating range
P0152(M)	2/1 02 Sensor Shorted To Voltage	Oxygen sensor input voltage sustained above normal operating range
P0153(M)	2/1 02 Sensor Slow Response	Oxygen sensor response slower than minimum required switching frequency
P0154(M)	2/1 02 Sensor Stays at Center	Neither rich or lean condition is detected from the oxygen sensor
P0155(M)	2/1 02 Sensor Heater Failure	Oxygen sensor heater element malfunction.
P0157(M)	2/2 02 Sensor Shorted To Ground	Oxygen sensor input voltage maintained below normal operating range
P0158(M)	2/2 02 Sensor Shorted To Voltage	Oxygen sensor input voltage maintained above normal operating range
P0159	2/2 02 Sensor Slow Response	Oxygen sensor response slower than minimum required switching frequency
P0160(M)	2/2 02 Sensor Stays at Center	Neither rich nor lean condition is detected from the oxygen sensor.
P0161(M)	2/2 02 Sensor Heater Failure	Oxygen sensor heater element malfunction.
P0171(M)	1/1 Fuel System Lean	A lean air/fuel mixture has been indicated by an abnormally rich correction factor.
P0172(M)	1/1 Fuel System Rich	A rich air/fuel mixture has been indicated by an abnormally lean correction factor.
P0174(M)	211 Fuel System Lean	A lean air/fuel mixture has been indicated by an abnormally rich correction factor.
P0175(M)	211 Fuel System Rich	A rich air/fuel mixture has been indicated by an abnormally lean correction factor.
P0176	Loss of Flex Fuel Calibration Signal	No calibration voltage present from flex fuel sensor
P0178	Flex Fuel Sensor Volts Too Low	Flex fuel sensor input below minimum acceptable voltage.
P0179	Flex Fuel Sensor Volts Too High	Flex fuel sensor input above maximum acceptable voltage.
P0182	CNG Temp Sensor Voltage Too Low	Compressed natural gas temperature sensor voltage below acceptable voltage.
P0183	CNG Temp Sensor Voltage Too High	Compressed natural gas temperature sensor voltage above acceptable voltage.
P0201(M)	Injector #1 Control Circuit	An open or shorted condition detected in control circuit for injector #1 or the INJ 1 injector bank.
P0202(M)	Injector #2 Control Circuit	An open or shorted condition detected in control circuit for injector #2 or the INJ 2 injector bank.
P0203(M)	Injector #3 Control Circuit	An open or shorted condition detected in control circuit for injector #3 or the INJ 3 injector bank.
P0204(M)	Injector #4 Control Circuit	Injector #4 or INJ 4 injector bank output driver stage does not respond properly to the control signal.
P0205(M)	Injector #5 Control Circuit	Injector #5 output driver stage does not respond properly to the control signal.
P0206(M)	Injector #6 Control Circuit	Injector #6 output driver stage does not respond properly to the control signal.
P0207	Injector #7 Control Circuit	Injector #7 output driver stage does not respond properly to the control signal.
P0208	Injector #8 Control Circuit	Injector #8 output driver stage does not respond properly to the control signal.
P0209	Injector #9 Control Circuit	Injector #9 output driver stage does not respond properly to the control signal.
P0210	Injector #10 Control Circuit	Injector #10 output driver stage does not respond properly to the control signal.
P0300(M)	Multiple Cylinder Misfire	Misfire detected in multiple cylinders.
P0301(M)	CYLINDER #1 MISFIRE	Misfire detected in cylinder #1.
P0302(M)	CYLINDER #2 MISFIRE	Misfire detected in cylinder #2.
P0303(M)	CYLINDER #3 MISFIRE	Misfire detected in cylinder #3.
P0304(M)	CYLINDER #4 MISFIRE	Misfire detected in cylinder #4.
P0305(M)	CYLINDER #5 MISFIRE	Misfire detected in cylinder #5.
P0306(M)	CYLINDER #6 MISFIRE	Misfire detected in cylinder #6.
P0307(M)	CYLINDER #7 MISFIRE	Misfire detected in cylinder #7
P0308(M)	CYLINDER #8 MISFIRE	Misfire detected in cylinder #8.
P0309(M)	CYLINDER #9 MISFIRE	Misfire detected in cylinder #9.
P031 0(M)	CYLINDER #10 MISFIRE	Misfire detected in cylinder #10.
P0320	No Crank Reference Signal at PCM	No reference signal (crankshaft position sensor) detected during engine cranking.
P0325	Knock Sensor #1 Circuit	Knock sensor (#1) signal above or below minimum acceptable threshold voltage at particular engine speeds.
P0330	Knock Sensor #2 Circuit	Knock sensor (#2) signal above or below minimum acceptable threshold voltage at particular engine speeds.
P0340(M)	No Cam Signal At PCM	No fuel sync
P0350	Ignition Coil Draws Too Much Current	A coil (1 -5) is drawing too much current.
P0351(M)	Ignition Coil # 1 Primary Circuit	Peak primary circuit current not achieved with maximum dwell time.
P0352(M)	Ignition Coil # 2 Primary Circuit	Peak primary circuit current not achieved with maximum dwell time.
P0353(M)	Ignition Coil # 3 Primary Circuit	Peak primary circuit current not achieved with maximum dwell time.
P0354(M)	Ignition Coil # 4 Primary Circuit	Peak primary circuit current not achieved with maximum dwell time (High Impedance).
P0355(M)	Ignition Coil # 5 Primary Circuit	Peak primary circuit current not achieved with maximum dwell time (High Impedance).
P0356(M)	Ignition Coil # 6 Primary Circuit	Peak primary circuit current not achieved with maximum dwell time (High impedance).
P0357	Ignition Coil # 7 Primary Circuit	Peak primary circuit current not achieved with maximum dwell time (High impedance).
P0358	Ignition Coil # 8 Primary Circuit	Peak primary circuit current not achieved with maximum dwell time (High impedance).
P0401(M)	EGR System Failure	Required change in air/fuel ration not detected during diagnostic test.
P0403(M)	EGR Solenoid Circuit	An open or shorted condition detected in the EGR solenoid control circuit.
P0404(M)	EGR Position Sensor Rationality	EGR position sensor signal does not correlate to EGR duty cycle.
P0405(M)	EGR Position Sensor Volts Too Low	EGR position sensor input below the acceptable voltage range.
P0406(M)	EGR Position Sensor Volts Too High	EGR position sensor input above the acceptable voltage range.
P0412	Secondary Air Solenoid Circuit	An open or shorted condition detected in the secondary air (air switching/aspirator) solenoid control circuit.
P0420(M)	1/1 Catalytic Converter Efficiency	Catalyst 1/1 efficiency below required level.
P0432(M)	112 Catalytic Converter Efficiency	Catalyst 211 efficiency below required level.
P0441(M)	Evap Purge Flow Monitor	Insufficient or excessive vapor flow detected during evaporative emission system operation.
P0442(M)	Evap Leak Monitor Medium (0.040) Leak Detected	A small leak has been detected in the evaporative system
P0443(M)	Evap Purge Solenoid Circuit	An open or shorted condition detected in the EVAP purge solenoid control circuit.
P0455(M)	Evap Leak Monitor Large Leak Detected	A large leak has been detected in the evaporative system.
P0456	Evap Leak Monitor Small (0.020) Leak Detected	A small leak has been detected in the evaporative system
P0460	Fuel Level Unit No Change Over Miles	No movement of fuel level sender detected.
P0461	Fuel Level Unit No Changeover Time	No level of fuel level sender detected.
P0462	Fuel Level Sending Unit Volts Too Low	Fuel level sensor input below acceptable voltage.
P0463	Fuel Level Sending Unit Volts Too High	Fuel level sensor input above acceptable voltage.
P0500(M)	No Vehicle Speed Sensor Signal	No vehicle speed sensor signal detected during road load conditions.
P0505(M)	Idle Air Control Motor Circuits	Actual state of AIS motor not equal to desired state.
P0522	Oil Pressure Sens Low	Oil pressure sensor input below acceptable voltage.
P0523	Oil Pressure Sens High	Oil pressure sensor input above acceptable voltage.
P0551(M)	Power Steering Switch Failure	Incorrect input state detected for the power steering switch circuit. PL: High pressure seen at high speed.
P0600(M)	PCM Failure SPI Communications	No communication detected between co-processors in the control module.
P0601(M)	PCM Internal Controller Failure	Internal control module fault condition (check sum) detected.
P0604	RAM Check Failure	Transmission control module RAM self test fault detected. -Aisin transmission.
P0605	ROM Check Failure	Transmission control module ROM self-test fault detected -Aisin transmission.
P0615	Starter Relay Control Circuit	An open or shorted condition detected in the starter relay control circuit.
P0622 (G)	Generator Field Not Switching Properly	An open or shorted condition detected in the generator field control circuit
P0645	A/C Clutch Relay Circuit	An open or shorted condition detected in the A/C clutch relay control circuit.
P0700(M)	EATX Controller DTC Present	This SBEC III or JTEC DTC indicates that the EATX or Aisin controller has an active fault and has illuminated the Check Engine Light via a J1850 (EATX) or SCI (Aisin) message. The specific fault must be acquired from the EATX via J1850 or from the Aisin via ISO-9141.
P0703(M)	Brake Switch Sense Circuit	Incorrect input state detected in the brake switch circuit. (Changed from P1595).
P0711	Trans Temp Sensor, No Temp Rise After Start	Relationship between the transmission temperature and overdrive operation and/or TCC operation indicates a failure of the Transmission Temperature Sensor. OBD 11 Rationality.
P0712	Trans Temp Sensor Voltage Too Low	Transmission fluid temperature sensor input below acceptable voltage.
P0713	Trans Temp Sensor Voltage Too High	Transmission fluid temperature sensor input above acceptable voltage.
P0720	Low Output SPD Sensor RPM, Above 15 MPH	The relationship between the Output Shaft Speed Sensor and vehicle speed is not within acceptable limits.
P0740(M)	Torq Con Clu, No RPM Drop at Lockup	Relationship between engine and vehicle speeds indicated failure of torque convertor clutch lock-up system (TCC/PTU sol).
P0743	Torque Converter Clutch Solenoid/ Trans Relay Circuits	An open or shorted condition detected in the torque converter clutch (part throttle unlock) solenoid control circuit. Shift solenoid C electrical fault - Aisin transmission
P0748	Governor Pressure Sol Control/Trans Relay Circuits	An open or shorted condition detected in the Governor Pressure Solenoid circuit or Trans Relay Circuit in JTEC RE transmissions.
P0751	O/D Switch Pressed (Low) More Than 5 Minutes	Overdrive override switch input is in a prolonged depressed state.
P0753	Trans 3-4 Shift Sol/Trans Relay Circuits	An open or shorted condition detected in the overdrive solenoid control circuit or Trans Relay Circuit in JTEC RE transmissions.
P0756	AW4 Shift Sol B (2-3) Functional Failure	Shift solenoid B (2-3) functional fault - Aisin transmission
P0783	3-4 Shift Sol, No RPM Drop at Lockup	The overdrive solenoid is unable to engage the gear change from 3rd gear to the overdrive gear.
P0801	Reverse Gear Lockout Circuit Open or Short	An open or shorted condition detected in the transmission reverse gear lockout solenoid control circuit.
P0833	Clutch Released Switch Circuit
P01192	Inlet Air Temp. Sensor Voltage Low	Inlet Air Temp. sensor input below acceptable voltage
P01193	Inlet Air Temp. Voltage High	Inlet Air Temp. sensor input above acceptable voltage
P1194	02 Heater Performance
P1195(M)	1/1 02 Sensor Slow During Catalyst Monitor	A slow switching oxygen sensor has been detected in bank 1/1 during catalyst monitor test. (was P0133)
P1196(M)	2/1 02 Sensor Slow During Catalyst Monitor	A slow switching oxygen sensor has been detected in bank 2/1 during catalyst monitor test. (was P0153)
P1197	1/2 02 Sensor Slow During Catalyst Monitor	A slow switching oxygen sensor has been detected in bank 1/2 during catalyst monitor test. (was P0139)
P1198	Radiator Temperature Sensor Volts Too High	Radiator coolant temperature sensor input above the maximum acceptable voltage.
P1199	Radiator Temperature Sensor Volts Too Low	Radiator coolant temperature sensor input below the minimum acceptable voltage
P1281	Engine is Cold Too Long	Engine coolant temperature remains below normal operating temperatures during vehicle travel (Thermostat).
P1282	Fuel Pump Relay Control Circuit	An open or shorted condition detected in the fuel pump relay control circuit.
P1288	Intake Manifold Short Runner Solenoid Circuit	An open or shorted condition detected in the short runner tuning valve circuit
P1289	Manifold Tune Valve Solenoid Circuit	An open or shorted condition detected in the manifold tuning valve solenoid control circuit.
P1290	CNG Fuel System Pressure Too High	Compressed natural gas system pressure above normal operating range
P1291	No Temp Rise Seen From Intake Heaters	Energizing Heated Air Intake does not change intake air temperature sensor an acceptable amount.
P1292	CNG Pressure Sensor Voltage Too High	Compressed natural gas pressure sensor reading above acceptable voltage
P1293	CNG Pressure Sensor Voltage Too Low	Compressed natural gas pressure sensor reading below acceptable voltage
P1294(M)	Target Idle Not Reached	Target RPM not achieved during drive idle condition. Possible vacuum leak or IAC (AIS) lost steps.
P1295	No 5 Volts to TP Sensor	Loss of a 5 volt feed to the Throttle Position Sensor has been detected.
P1296	No 5 Volts to MAP Sensor	Loss of a 5 volt feed to the MAP Sensor has been detected.
P1297(M)	No Change in MAP From Start To Run	No difference is recognized between the MAP reading at engine idle and the stored barometric pressure reading.
P1298	Lean Operation at Wide Open Throttle	A prolonged lean condition is detected during wide-open Throttle.
P1299(M)	Vacuum Leak Found (IAC Fully Seated)	MAP Sensor signal does not correlate to Throttle Position Sensor signal. Possible vacuum leak.
P1388	Auto Shutdown Relay Control Circuit	An open or shorted condition detected in the ASD or CNG shutoff relay control circuit
P1389	No ASD Relay Output Voltage At PCM	No Z1 or Z2 voltage sensed when the auto shutdown relay is energized.
P 1390(M)	Timing Belt Skipped 1 Tooth or More	Relationshipbetween Cam and Cranksignals notcorrect.
P1391(M)	Intermittent Loss of CMP or CKP	Loss of the Cam Position Sensor or Crank Position sensor has occurred.
P1398(M)	Misfire Adaptive Numerator at Limit	PCM is unable to learn the Crank Sensor's signal in preparation for Misfire Diagnostics. Probable defective Crank Sensor.
P1399	Wait To Start Lamp Circuit	An open or shorted condition detected in the Wait to Start Lamp circuit.
P1403	No 5 Volts to EGR Sensor	Loss of 5v feed to the EGR position sensor.
P1476	Too Little Secondary Air	Insufficient flow of secondary air injection detected during aspirator test.(was P0411)
P1477	Too Much Secondary Air	Excessive flow of secondary air injection detected during aspirator test (was P0411).
P1478(M)	Battery Temp Sensor Volts Out of Limit	Internal temperature sensor input voltage out of an acceptable range.
P1479	Transmission Fan Relay Circuit	An open or shorted condition detected in the transmission fan relay circuit.
P1480	PCV Solenoid Circuit	An open or shorted condition detected in the PCV solenoid circuit.
P1481	EATX Misfire RPM Signal out of Range	EATX RPM pulse generator signal for misfire detection does not correlate with expected value.
P1482	Catalyst Temperature Sensor Circuit Shorted Low	Catalyst temperature sensor circuit shorted low.
P1483	Catalyst Temperature Sensor Circuit Shorted High	Catalyst temperature sensor circuit shorted high.
P1484	Catalytic Converter Overheat Detected	A catalyst overheat condition has been detected by the catalyst temperature sensor.
P1485	Air Injection Solenoid Circuit	An open or shorted condition detected in the air assist solenoid circuit.
P1486(M)	Eva Leak Monitor Pinched Hose Found	LDP has detected a pinched hose in the evaporative hose system.
P1487	Hi Speed Rad Fan CTRL Relay Circuit	An open or shorted condition detected in the control circuit of the #2 high-speed radiator fan control relay.
P1488	Auxiliary 5 Volt Supply Output Too Low	Auxiliary 5-volt sensor feed is sensed to be below an acceptable limit.
P1489(M)	High Speed Fan CTRL Relay Circuit	An open or shorted condition detected in the control circuit of the high-speed radiator fan control relay.
P1490(M)	Low Speed Fan CTRL Relay Circuit	An open or shorted condition detected in control circuit of the low speed radiator fan control relay.
P1491	Rad Fan Control Relay Circuit	An open or shorted condition detected in the radiator fan control relay control circuit. This includes PWM solid state relays.
P1492 (M,G)	Ambient/Batt Temp Sen Volts Too High	External temperature sensor input above acceptable voltage
P1493 (M,G)	Ambient/Batt Temp Sen Volts Too Low	External temperature sensor input below acceptable voltage.
P1494(M)	Leak Detection Pump Switch or Mechanical Fault	Incorrect input state detected for the Leak Detection Pump (LDP) pressure switch.
P1495(M)	Leak Detection Pump Solenoid Circuit	An open or shorted condition detected in the Leak Detection Pump (LDP) solenoid circuit.
P1496(M)	5 Volt Supply, Output Too Low	5-volt sensor feed is sensed to be below an acceptable limit. (< 4v for 4 sec).
P1498	High Speed Rad Fan Ground CTRL Relay Circuit	An open or shorted condition detected in the control circuit of the #3 high-speed radiator fan control relay.
P1594 (G)	Charging System Voltage Too High	Battery voltage sense input above target charging voltage during engine operation.
P1595	Speed Control Solenoid Circuits	An open or shorted condition detected in either of the speed control vacuum or vent solenoid control circuits.
P1596	Speed Control Switch Always High	Speed control switch input above maximum acceptable voltage.
P1597	Speed Control Switch Always Low	Speed control switch input below minimum acceptable voltage.
P1598	A/C Pressure Sensor Volts Too High	A/C pressure sensor input above maximum acceptable voltage.
P1599	A/C Pressure Sensor Volts Too Low	A/C pressure sensor input below minimum acceptable voltage.
P1602	PCM Not Programmed	For generic modules
P1681	No I/P Cluster CCD/J1850 Messages Received	No J1850 messages received from the cluster control module.
P1682 (G)	Charging System Voltage Too Low	Battery voltage sense input below target charging voltage during engine operation and no significant change in voltage detected during active test of generator output circuit.
P1683	SPD CTRL PWR Relay; or S/C 12v Driver CKT	An open or shorted condition detected in the speed control servo power control circuit. (SBECII: ext relay).
P1684	Battery Disconnected in the last 50 Starts	The battery has been disconnected within the last 50 starts.
P1685	Skim Invalid Key	The engine controller has received an invalid key from the SKIM.
P1686	No SKIM BUS Messages Received	No J1850 messages received from the Smart Key Immobilizer Module (SKIM).
P1687	No Cluster BUS Message	No J1850 messages received from the Mechanical Instrument Cluster (MIC) module.
P1 693	DTC Detected in Companion Module	A fault has been generated in the companion engine control module.
P1694	No BUS Message Received from Companion Module	No J1850 messages received from the powertrain control module-Aisin transmission.
P1695	No CCD/J1850 Messages from the Body Control Module.	No J1850 messages received from the body control module.
P1696(M)	PCM Failure EEPROM Write Denied	Unsuccessful attempt to write to an EEPROM location by the control module.
P1697(M)	PCM Failure SRI Mile Not Stored	Unsuccessful attempt to update Service Reminder Indicator (SRI or EMR) mileage in the control module EEPROM.
P1698(M)	No CCD/J1850 Message From TCM	No J1850 messages received from the electronic transmission control module (EATX) or the Aisin transmission controller.
P1719	Skip Shift Solenoid Circuit	An open or shorted condition detected in the transmission 2-3 gear lockout solenoid control circuit.
P1740	TCC or O/D Solenoid Performance	A rationality error has been detected in either the tcc solenoid or overdrive solenoid systems.
P1756	GOV Press Not Equal to Target @ not15-20 PSI	The requested pressure and the actual pressure are within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for 1st, 2nd, and 3rd gear. (Mid Pressure Malfunction)
P1757	GOV Press Above 3 PSI in gear with 0 MPH	The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for 1st, 2nd, and 3rd gear (Zero Pressure Malfunction)
P1762	Gov Press Sen Offset Volts Too Low or High	The Governor Pressure Sensor input is greater than a calibration limit or is less than a calibration limit for 3 consecutive park/neutral calibrations.
P1763	Governor Pressure Sensor Volts Too High	The Governor Pressure Sensor input is above an acceptable voltage level.
P1764	Governor Pressure Sensor Volts Too Low	The Governor Pressure Sensor input is below an acceptable voltage level.
P1765	Trans 12 Volt Supply Relay CTRL Circuit	An open or shorted condition is detected in the Transmission Relay control circuit. This relay supplies power to the TCC>
P1899(M)	P/N Switch Stuck in Park or in Gear	Incorrect input state detected for the Park/Neutral switch.