diagnostic trouble code index allison

Diagnostic Trouble Code Index

NOTE: Some of the following DTC code symptoms may experience multiple DTC code symptoms. The loss of one or more gears could be experienced depending on transmission condition.

Diagnostic Trouble Code Chart

Flash

Code

DTC Compo-

nent

Descrip- tion

Condition Symptom Action

111 - - No codes found

- - -

113 P0706 TR-P Sensor

TR-P sensor frequency fault detected.

TR-P sensor signal frequency is out of normal range.

Only REVERSE, NEUTRAL and 5th gear detected. Engine may not crank.

GO to Pinpoint Test C.


TR-P sensor circuit duty cycle low input.

TR-P sensor signal duty cycle is below threshold, sensor/circuit electrical malfunction.




TR-P sensor circuit duty cycle high input.

TR-P sensor signal duty cycle is above threshold, sensor/circuit electrical malfunction.




Flash

Code

DTC Compo-

nent

Descrip- tion



TR-P error.

TR-P sensor error detected.




TR-P sensor not in P or N positions during KOEO or KOER.

KOEO or KOER not run in P or N positions, or TR-P sensor circuit failure.

DTC is set. RERUN KOEO and KOER in P or N position. GO to Pinpoint Test C.

122 P0711 TFT Sensor

No change if TFT during operation.

TCM has detected no TFT change during operation. TFT value stuck at some normal reading.

No 5th or 6th gears.

GO to Pinpoint Test B.

123, 121

P0712, P0710

TFT Sensor

157°C (315°F) indicated, TFT sensor circuit grounded.

Voltage drop across TFT sensor exceeds scale set for temperature of 157°C (315°F).



124, 121

P0713, P0710

TFT Sensor

-40°C (-40°F) indicated, TFT sensor circuit

Voltage drop across TFT sensor exceeds scale set




Flash

Code

DTC Compo-

nent

Descrip- tion


open. for temperature of -40°C (-40°F).


TFT out of range during on-board diagnostics.

Transmission not operating at temperature during on-board diagnostics.

DTC set: engine cold or overheated.

Warm or cool engine to normal operating temperature. GO to Pinpoint Test B.


Trans- mission overtemp condition indicated.

Transmission fluid temperature exceeded 127°C (270°F).

Torque converter engages earlier than expected.


125 P0715 TSS Sensor

Insuff- icient input from TSS.

TCM detected a loss of TSS signal during operation.

Harsh shifts and engagements, engine rpm higher or lower than expected. No 1st, 3rd or 5th gear.

GO to Pinpoint Test D.

131 P0717 TSS Sensor

No TSS signal.

TCM has not detected a TSS signal.

Harsh shifts and engagements, engine rpm higher or lower than expected. No 1st, 3rd or 5th gear.


132 P0718 TSS TSS TCM has - GO to


Flash

Code

DTC Compo-

nent

Descrip- tion


Sensor

signal noisy.

detected a noisy TSS signal.

Pinpoint Test D.

133 P0720 OSS Sensor

Insuff- icient input from OSS.

TCM detected a loss of OSS signal during operation.

No 1st, 2nd, 3rd, 4th or 6th gear.



OSS signal noisy.

TCM has detected a noisy OSS signal.

- GO to Pinpoint Test D.


No OSS signal.

TCM has detected no OSS signal.

No 1st, 2nd, 3rd, 4th or 6th gear.


435 U0100 TCM CAN

TCM communi-cation link error.

CAN link error detected by TCM. Loss of communication with the ECM.

Only reverse, neutral and 5th gears are available.

Refer to the Powertrain Control/ Emissions Diagnosis (PC/ED) manual.

141 P0730 Clutch Control Solenoid or Internal Parts

Gear ratio error.

TCM has detected a gear ratio error. OWC clutch or clutches may have failed.

Incorrect 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

REFER to PID P0730_Status Chart, found immediately after Output State Control (OSC) Mode in this section, for a specific failure. REFER to the Solenoid Application charts located at the beginning of Pinpoint


Flash

Code

DTC Compo-

nent

Descrip- tion


friction material). Engine rpm could be higher or lower than expected. May flash TCIL.

Tests - OSC Equipped Vehicles. If other solenoid DTCs are present, GO to Pinpoint Test A. If only P0730 is present, INSTALL the appropriate clutch solenoid. CLEAR DTCs, road test. If the concern is still present, REPAIR/INSTALL new internal transmission components.

142 P0740 (Output circuit check, generated only by electronical symptoms.)

TCC Solenoid

TCC solenoid open circuit failure.

TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open.

Open circuit: TCC never engages.

GO to Pinpoint Test A.

143 P0741 TCC Solenoid

TCC solenoid circuit perform- ance error.

Torque converter slippage detected during engagement command indicating a concern with mechanical or hydraulic operation of the converter clutch.

No TCC engagement.

Refer to Diagnosis By Symptom.


Flash

Code

DTC Compo-

nent

Descrip- tion



TCC solenoid circuit shorted to ground.

TCC solenoid circuit fails to provide voltage drop across solenoid. Shorted to ground.

Short circuit: Only 5th gear at low vehicle speeds.



TCC solenoid circuit failure.

TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open, shorted or TCM driver failure during on-board diagnostics.

Open circuit: TCC never engages.

Short circuit: Only 5th gear at lower speeds.



TCC solenoid circuit shorted to power.

TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit shorted to power.

No torque converter engagement.



TCC solenoid circuit perform- ance error.

Torque converter slippage detected during engagement command indicating a concern with mechanic

No TCC engagement.

Refer to Diagnosis By Symptom.


Flash

Code

DTC Compo-

nent

Descrip- tion


al or hydraulic operation of the converter clutch.

152 P0748 b PC-A Line Pressure Control Solenoid

PC-A solenoid circuit failure.

Voltage through PC-A solenoid is checked. An error will be noted if tolerance is exceeded.

Open circuit: maximum PC-A pressure, harsh engagements and shifts. Engine rpm higher than expected.

Only 5th gear present.

Short circuit: Maximum PC-A pressure, harsh engagements and shifts. Engine rpm higher than expected.

GO to Pinpoint Test E.

314 P0960 b PC-A Line Pressure Control Solenoid

PC-A solenoid circuit open failure.


Open circuit: maximum PC-A pressure, harsh engagements and shifts. Engine rpm higher than expected.


315 P0962 b PC-A Line

PC-A solenoi

Voltage through

Short circuit:

GO to Pinpoint Test


Flash

Code

DTC Compo-

nent

Descrip- tion


Pressure Control Solenoid

d short to ground circuit failure.

PC-A solenoid is checked. An error will be noted if tolerance is exceeded.

Only 5th gear present.

E.

321 P0963 PC-A Line Pressure Control Solenoid

PC-A solenoid short to power circuit failure.


Maximum PC-A pressure, harsh engagements and shifts. Engine rpm higher than expected.


153 P0750 a SSPC-A Coast Clutch

SSPC-A solenoid circuit open.

SSPC-A circuit failed to provide voltage drop across solenoid. Circuit open or TCM driver failure during on-board diagnostics.

No 2nd, 4th or 6th gear.


154 P0751 SSPC-A Coast Clutch

SSPC-A circuit, clutch or solenoid failure - OFF.

SSPC-A circuit, clutch or solenoid failed in the OFF position during operation resulting in HIGH pressure in the hydraulic

Tow/Haul OFF:

No 1st, 3rd or 5th gears av



Flash

Code

DTC Compo-

nent

Descrip- tion


circuit. ailable.

Tow/Haul ON:

No 1st, 3rd or 5th gears available.


SSPC-A circuit, clutch or solenoid failure - ON.

SSPC-A circuit, clutch or solenoid failed in the ON position during operation resulting in LOW pressure in the hydraulic circuit.

Tow/Haul OFF:

No 1st, 2nd, 3rd or 5th gears available.

Tow/Haul ON:

No 2n



Flash

Code

DTC Compo-

nent

Descrip- tion


d, 4th or 6th gears available.

211 P0753 a SSPC-A Coast Clutch

SSPC-A solenoid circuit failure.

SSPC-A circuit failed to provide voltage drop across solenoid. Circuit failure or TCM driver failure.

Tow/Haul OFF:

No 2nd, 4th, 5th or 6th gears available.

No gears available.

Tow/Haul ON:

No 1st, 2n



Flash

Code

DTC Compo-

nent

Descrip- tion


d, 3rd, 4th or 6th gears available.


SSPC-A solenoid or circuit shorted to ground.

Voltage through SSPC-A solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.

Tow/Haul OFF:

No 2nd, 4th, 5th or 6th gears available.

Tow/Haul ON:

No 1st, 2nd, 3rd, 4th or 6th



Flash

Code

DTC Compo-

nent

Descrip- tion


gears available.


SSPC-A solenoid or circuit shorted to power.

Voltage through SSPC-A solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure detected.

Tow/Haul OFF:

No gears available.

Tow/Haul ON:

No 2nd, 4th or 6th gears available.


212 P0755 a SSPC-B Overdrive Clutch

SSPC-B solenoid circuit open.

SSPC-B circuit, clutch or solenoid failed to provide voltage drop across solenoid. Circuit open or TCM

Tow/Haul OFF:

Only 1st or 3rd gears av



Flash

Code

DTC Compo-

nent

Descrip- tion


driver failure during on-board diagnostics.

ailable.

Tow/Haul ON:

Only 5th gear available.

213 P0756 SSPC-B Overdrive Clutch

SSPC-B circuit, clutch or solenoid - OFF.

SSPC-B circuit, clutch or solenoid failed in the OFF position during operation resulting in LOW pressure in the hydraulic circuit.

Tow/Haul OFF:

No 2nd gear available.

Tow/Haul ON:

No 2nd, 4th or 6th gears availabl



Flash

Code

DTC Compo-

nent

Descrip- tion


e.


SSPC-B circuit, clutch or solenoid failure - ON.

SSPC-B circuit, clutch or solenoid failed in the ON position during operation resulting in HIGH pressure in the hydraulic circuit.

No 1st, 3rd or 5th gears available.


215 P0758 a SSPC-B Overdrive Clutch

SSPC-B solenoid circuit failure.

SSPC-B circuit failed to provide voltage drop across solenoid. Circuit failure or TCM driver failure.

Tow/Haul OFF:

Only 1st or 3rd gears available.


Tow/Haul ON:

No 5th ge



Flash

Code

DTC Compo-

nent

Descrip- tion


ar available.

Only 4th, 5th and 6th gears available.


SSPC-B solenoid or circuit shorted to ground.

Voltage through SSPC-B solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.

Tow/Haul OFF:


Tow/Haul ON:

Only 4th and 6th gears



Flash

Code

DTC Compo-

nent

Descrip- tion


available.

332 P0977 b SSPC-B Overdrive Clutch

SSPC-B solenoid or circuit shorted to power.

Voltage through SSPC-B solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure detected.

Tow/Haul OFF:

Only 1st and 3rd gears available.

Tow/Haul ON:



221 P0760 a SSPC-C Intermed- iate Clutch

SSPC-C solenoid circuit open.

SSPC-C circuit failed to provide voltage drop across solenoid. Circuit open or TCM drive failure during on-board diagnostics.

Tow/Haul OFF:

Only 1st and 2nd gears av



Flash

Code

DTC Compo-

nent

Descrip- tion


ailable.

Tow/Haul ON:


222 P0761 SSPC-C Intermed- iate Clutch

SSPC-C circuit, clutch or solenoid failure - OFF.

SSPC-C circuit, clutch or solenoid failed in the OFF position during operation resulting in LOW pressure in the hydraulic circuit.

No 3rd and 4th gear available.



SSPC-C circuit, clutch or solenoid failure - ON.

SSPC-C circuit, clutch or solenoid failed in the ON position during operation resulting in HIGH pressure in the hydraulic circuit.

Only 3rd and 4th gear available.


224 P0763 a SSPC-C Intermed- iate

SSPC-C solenoid circuit

SSPC-C circuit failed to provide voltage

Tow/Haul OFF:

O



Flash

Code

DTC Compo-

nent

Descrip- tion


Clutch failure. drop across solenoid. Circuit failure or TCM driver failure.

nly 1st, 2nd and 3rd gears available.

Tow/Haul ON:

Only 4th and 5th gear available.


SSPC-C solenoid or circuit shorted to ground.

Voltage through SSPC-C solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.

Tow/Haul OFF:

Only 3rd gear available.

Tow/Haul ON:



Flash

Code

DTC Compo-

nent

Descrip- tion



335 P0980 b SSPC-C Intermed- iate Clutch

SSPC-C solenoid or circuit shorted to power.

Voltage through SSPC-C solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure detected.

Tow/Haul OFF:

Only 1st and 2nd gear available.

Tow/Haul ON:



225 P0765 SSPC-D Direct Clutch

SSPC-D solenoid circuit open.

SSPC-D circuit failed to provide voltage drop across solenoid.

Tow/Haul OFF:

Only 5th ge



Flash

Code

DTC Compo-

nent

Descrip- tion


Circuit open or TCM driver failure during on-board diagnostics.

ar available.

Tow/Haul ON:



SSPC-D circuit, clutch or solenoid failure - OFF.

SSPC-D circuit, clutch or solenoid failed in the OFF position during operation resulting in HIGH pressure in the hydraulic circuit.

Tow/Haul OFF:

No 5th gear available.

Tow/Haul ON:

No 5th or 6th gears available.



Flash

Code

DTC Compo-

nent

Descrip- tion



SSPC-D circuit, clutch or solenoid failure - ON.

SSPC-D circuit, clutch or solenoid failed in the ON position during operation resulting in LOW pressure in the hydraulic circuit.

No 1st, 2nd, 3rd or 4th gears available.



SSPC-D solenoid circuit failure.

SSPC-D circuit failed to provide voltage drop across solenoid. Circuit failure or TCM driver failure.

Tow/Haul OFF:

Only 1st, 2nd and 5th gears available.

Tow/Haul ON:

Only 5th and 6th gear available.


342 P0982 b SSPC- SSPC- Voltage Tow/Haul GO to


Flash

Code

DTC Compo-

nent

Descrip- tion


D Direct Clutch

D solenoid or circuit shorted to ground.

through SSPC-D solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.

OFF:

Only 1st and 2nd gears available.

Tow/Haul ON:


Pinpoint Test A.

343 P0983 b SSPC-D Direct Clutch

SSPC-D solenoid or circuit shorted to power.

Voltage through SSPC-D solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure detected.

Tow/Haul OFF:


Tow/Haul ON:

Only 6th



Flash

Code

DTC Compo-

nent

Descrip- tion


gear available.

234 P0770 SSPC-E Low/ Reverse Clutch

SSPC-E solenoid circuit open.

SSPC-E circuit failed to provide voltage drop across solenoid. Circuit open or TCM drive failure during on-board diagnostics.

Tow/Haul OFF:


Tow/Haul ON:




SSPC-E circuit, clutch or solenoid failure - OFF.

SSPC-E circuit, clutch or solenoid failed in the ON position during operation resulting in LOW pressure

Tow/Haul OFF:

No 1st gear avail



Flash

Code

DTC Compo-

nent

Descrip- tion


in the hydraulic circuit. abl

e.

Tow/Haul ON:

No 1st or 2nd gears available.


SSPC-E circuit, clutch or solenoid failure - ON.

SSPC-E circuit, clutch or solenoid failed in the OFF position during operation resulting in HIGH pressure in the hydraulic circuit.

Tow/Haul OFF:

Only 1st gear available.

Tow/Haul ON:

Only 1st or 2nd gears availabl



Flash

Code

DTC Compo-

nent

Descrip- tion


e.


SSPC-E solenoid circuit failure.

SSPC-E circuit failed to provide voltage drop across solenoid. Circuit failure or TCM driver failure.

Tow/Haul OFF:


Tow/Haul ON:



345 P0985 b SSPC-E Low/ Reverse Clutch

SSPC-E solenoid or circuit shorted to ground.

Voltage through SSPC-E solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected.

Tow/Haul ON:



351 P0986 b SSPC- SSPC- Voltage Tow/Haul GO to


Flash

Code

DTC Compo-

nent

Descrip- tion


E Low/ Reverse Clutch

E solenoid or circuit shorted to power.

through SSPC-E solenoid circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure detected.

OFF:


Tow/Haul ON:


Pinpoint Test A.

243 P0791 Intermed- iate Shaft Speed Sensor

Insuff- icient input from intermediate shaft speed sensor.

TCM detected an insufficient signal from the intermediate shaft speed sensor during operation.

Harsh shifts or engagements, engine rpm higher or lower than expected. No 1st, 3rd or 5th gears.



No input from intermediate shaft speed sensor.

TCM detected a loss of intermediate shaft speed sensor signal during operation.

Harsh shifts or engagements, engine rpm higher or lower than expected. No 1st, 3rd or 5th gears.



Flash

Code

DTC Compo-

nent

Descrip- tion



Intermed- iate shaft speed sensor signal intermittent.

TCM has detected an intermittent intermediate shaft speed sensor signal.

- GO to Pinpoint Test D.

422 P1780 TCS Switch

TCS switch input incorrect per selected position.

TCS switch voltage incorrect.

No Tow/Haul feature when TCS switch is pressed during self-test.

RERUN on-board diagnostics and cycle switch. If concern is still present, REFER to Automatic Transaxle/ Transmission External Controls .

a Output circuit check, generated only by electrical symptoms. b May also generate by some other non-electrical transmission hardware system.

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diagnostic trouble code index allison

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