Diagnostic Trouble Code Charts

DIAGNOSTIC TROUBLE CODE CHARTS

*Output circuit check, generated only by electrical symptoms.
**May also be generated by some other nonelectric transmission hardware system.
Four-Digit DTC	Component	Description	Condition	Symptom	Action
P1111	SYSTEM	Pass	No malfunction detected.	Malfunction not detected by PCM.	Refer to PC/ED.
P0112	IAT	IAT indicates 121°C (250°F) (grounded)	Voltage drop across IAT exceeds scale set for temperature 121°C (250°F).	Incorrect EPC pressure. Either high or low which will result in harsh or soft shifts.	Refer to PC/ED.
P0113	IAT	IAT indicates -40°C (-40°F) (open circuit)	Voltage drop across IAT exceeds scale set for temperature -40°C (-40°F).	Incorrect EPC pressure. Either high or low which will result in harsh or soft shifts.	Refer to PC/ED.
P0114	IAT	IAT out of on-board diagnostic range	IAT temperature higher or lower than expected during KOEO and KOER.	Rerun on-board diagnostic at normal operating temperature.	Refer to PC/ED.
P1116	ECT	ECT out of on-board diagnostic range	ECT temperature higher or lower than expected during KOEO and KOER.	Rerun on-board diagnostic at normal operating temperature.	Refer to PC/ED.
P0117	ECT	ECT indicates 121°C (250°F)	Voltage drop across ECT exceeds scale set for temperature 121°C (250°F) (grounded).	Torque converter clutch will always be off, resulting in reduced fuel economy.	Refer to PC/ED.
P0118	ECT	ECT indicates -40°C (-40°F)	Voltage drop across ECT exceeds scale set for temperature -40°C (-40°F) (open circuit).	Torque converter clutch will always be off, resulting in reduced fuel economy.	Refer to PC/ED.
P1124	TP	TP voltage high/low for on-board diagnostic.	TP was not in the correct position for on-board diagnostic.	Rerun at appropriate throttle position per application.	Refer to PC/ED.
P0122, P0123, P1120, P1121, P1125	TP	TP concern	PCM has detected an error. This error may cause a transmission concern.	Harsh engagements, firm shift feel, abnormal shift schedule, torque converter clutch does not engage. Torque converter clutch cycling.	Refer to PC/ED.
P0102, P0103, P1100, P1101	MAF	MAF concerns	MAF system has a malfunction which may cause a transmission concern.	High/low EPC pressure, incorrect shift schedule. Incorrect torque converter clutch engagement scheduling. Symptoms similar to a TP failure.	Refer to PC/ED.
P0300-P0308 P0320, P0340 P1351-P1364	EI	EI system concerns	EI system has a malfunction which may cause a transmission concern.	Harsh engagements and shifts, late WOT shifts, no torque converter clutch engagement.	Refer to PC/ED.
P0503, P0500, P1500, P1501	VSS	Insufficient VSS input.	PCM detected a loss of vehicle speed signal during operation.	Torque converter clutch engages, shift engagement/disengagement (hunting) on grades.	Refer to PC/ED.
P1703	BOO	Brake not actuated during on-board diagnostic.	Brake not cycled during KOER.	Failed ON or not connected—torque converter clutch will not engage at less than 1/3 throttle.	Refer to PC/ED.
P1703	BOO	BOO switch circuit failed.	Brake ON/OFF circuit failure.	Failed OFF or not connected—torque converter clutch will not disengage when brake is applied.	Refer to PC/ED.
P1460	A/C	A/C clutch cycling pressure switch error	A/C or Defrost ON condition may result from A/C clutch being ON during on-board diagnostic.	DTC set during on-board diagnostic—rerun with A/C OFF. Failed ON—EPC pressure slightly low with A/C OFF.	Refer to PC/ED.
P0781,** P1731**	SS1 or internal parts	1-2 shift error	Engine rpm drop not detected when 1-2 shift was commanded by PCM.	Improper gear selection depending on failure or mode and manual lever position. Shift errors may also be due to other internal transmission concerns (stuck valves, damaged friction material).	Refer to Solenoid On/Off Charts. Refer to Pinpoint Test A.
P0782,** P1732**	SS1, SS2 or internal parts	2-3 shift error	Engine rpm drop not detected when 2-3 shift was commanded by PCM.	Improper gear selection depending on failure or mode and manual lever position. Shift errors may also be due to other internal transmission concerns (stuck valves, damaged friction material).	Refer to Solenoid On/Off Charts. Refer to Pinpoint Test A.
P0783,** P1733**	SS1, SS2 or internal parts	3-4 shift error	Engine rpm drop not detected when 3-4 shift was commanded by PCM.	Improper gear selection depending on failure or mode and manual lever position. Shift errors may also be due to other internal transmission concerns (stuck valves, damaged friction material).	Refer to Solenoid On/Off Charts. Refer to Pinpoint Test A.
P0750*	SS1	SS1 solenoid circuit failure	SS1 circuit failed to provide voltage drop across solenoid. Circuit open or shorted or PCM driver failure during on-board diagnostic.	Improper gear selection depending on condition mode and manual lever position. See Solenoid On/Off chart.	Refer to Pinpoint Test A.
P0755*	SS2	SS2 solenoid circuit failure	SS2 circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM driver failure during on-board diagnostic.	Improper gear selection depending on condition mode and manual lever position. See Solenoid On/Off chart.	Refer to Pinpoint Test A.
—	TCIL	TCIL circuit failure	TCIL circuit open or shorted.	Failed ON—Overdrive cancel mode on. NO flashing TCIL for EPC failure or sensor. Failed OFF—Overdrive cancel mode never indicated. NO flashing TCIL for EPC sensor failure.	Refer to PC/ED.
P1747**	EPC	EPC solenoid circuit failure, shorted circuit or output driver.	Voltage through EPC solenoid is checked. An error will be noted if tolerance is exceeded.	Short Circuit—Causes minimum EPC pressure (minimum capacity) and limits engine torque (alternate firm).	Refer to Pinpoint Test E.
P1746**	EPC	Shorted PCM output driver.		Open Circuit—Causes maximum EPC pressure, harsh engagements and shifts.	Refer to Pinpoint Test E.
P0741**	Transmission	Transmission slippage detected.	The PCM picked up an excessive amount of slippage during normal vehicle operation.	Transmission slippage/erratic or no torque converter clutch operation. Flash TCIL.	Refer to Diagnosis by Symptom.
P1780	TCS	TCS not changing states.	TCS not cycled during self-test. TCS circuit open or shorted.	Rerun on-board diagnostic and cycle switch. No OD cancel when switch is cycled.	PC/ED
P1711	TFT	TFT out of on-board diagnostic range.	Transmission not at operating temperature during on-board diagnostic.	Warm vehicle to normal operating temperature.	Refer to Pinpoint Test B.
P0713	TFT	-40°C (-40°F) indicated TFT sensor circuit open.	Voltage drop across TFT sensor exceeds scale set for temperature -40°C (-40°F)	Firm shift feel.	Refer to Pinpoint Test B.
P0712	TFT	157°C (315°F) indicated TFT sensor circuit grounded.	Voltage drop across TFT sensor exceeds scale set for temperature of 157°C (315°F)	Firm shift feel.	Refer to Pinpoint Test B.
P0720, P0721	OSS	Insufficient input from output shaft speed sensor.	PCM detected a loss of OSS signal during operation.	Harsh shifts, abnormal shift schedule, no torque converter clutch activation.	Refer to Pinpoint Test F.
P0743*	TCC	TCC solenoid circuit failure during on-board diagnostic.	TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM drive failure during on-board diagnostic.	Short circuit—Engine stalls in second (OD, 2 range) at low idle speeds with brake applied. Open circuit—Torque converter clutch never engages.	Refer to Pinpoint Test C.
P1705	TR Sensor	TR sensor not indicating PARK during KOEO.	On-board diagnostic not run in PARK.	Rerun on-board diagnostic in PARK	Refer to Pinpoint Test D.
P1741**	TCC	Excessive torque converter clutch engagement error.	Excessive variations in slip (engine speed surge) across the torque converter clutch.	Engine rpm oscillation is present in 3rd gear.	Refer to Pinpoint Test C.
P1783	TFT	Transmission overtemp condition indicated.	Transmission fluid temperature exceeded 132°C (270°F).	Increase in EPC pressure.	Refer to Pinpoint Test B.
P0707	TR Sensor	TR sensor circuit below minimum voltage.	TR sensor, circuit or PCM shorted or grounded.	Increase in EPC pressure.	Refer to Pinpoint Test D.
P0708	TR Sensor	TR sensor circuit above maximum voltage.	TR sensor, circuit or PCM indicates open.	Increase in EPC pressure.	Refer to Pinpoint Test D.
P0751	SS1	Shift solenoid No. 1 functional failure.	Mechanical or hydraulic failure of the shift solenoid.	Improper gear selection depending on failure mode and manual lever position.	Refer to Solenoid On/Off Chart. Refer to Pinpoint Test A.
P0756	SS2	Shift solenoid No. 2 functional failure.	Mechanical or hydraulic failure of the shift solenoid.	Improper gear selection depending on failure mode and manual lever position.	Refer to Solenoid On/Off Chart. Refer to Pinpoint Test A.
P1742	TCC	TCC solenoid failed ON (Calif. only).	TCC solenoid has failed ON by electric, mechanical or hydraulic concern.	Harsh shifts.	Refer to Pinpoint Test C.
P1743	TCC	TCC solenoid failed ON.	TCC solenoid has failed ON by electric, mechanical or hydraulic concern.	Harsh shifts.	Refer to Pinpoint Test C.
P1744	Transmission (California only)	Transmission slippage detected.	The PCM picked up an excessive amount of slippage during normal vehicle operation.	Transmission slippage/erratic or no torque converter clutch operation.	Refer to Diagnosis by Symptom Chart.
P1751**	SS1	Shift solenoid No. 1 functional failure (California only)	Mechanical or hydraulic failure of the shift solenoid.	Improper gear selection depending on failure mode and manual lever position.	Refer to Solenoid On/Off Chart. Refer to Pinpoint Test A.
P1756**	SS2	Shift solenoid No. 2 functional failure (California only)	Mechanical or hydraulic failure of the shift solenoid.	Improper gear selection depending on failure mode and manual lever position.	Refer to Solenoid On/Off Chart. Refer to Pinpoint Test A.
P1781	4x4L switch	4x4L switch closed.	4x4L switch closed/or 4x4 low indicator lamp circuit open.	Failed on — Early shift schedules in 4x2 and 4x4 HI range.	Refer to PC/ED.
				Failed off — Shifts delayed in 4x4 Low.
				NOTE: If the 4x4 low indicator light fuse is blown, the transmission will shift according to the 4x4 low shift schedule regardless of the transfer case position.
P1729	4x4L switch	4x4L switch failure.	4x4L switch failure during normal vehicle operation.	Early shifts, harsh shifts, increase in electronic pressure control pressure.	Refer to PC/ED.