Automatic Transmission Electronic Controls Diagnosis DTCS
AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Component | Description | Condition | Symptom | Perform Test |
|---|---|---|---|---|---|
| P1702 | Digital TR | Intermittent DTC codes P0705 or P0708 | Refer to DTC codes P0705 or P0708 condition. | Refer to DTC codes P0705 or P0708 symptom. | Go To PINPOINT TEST C . |
| P1704 | Digital TR | Digital TR circuit reading in between gear position during KOEO/KOER | Digital TR sensor or shift cable incorrectly adjusted; or digital TR circuit failure. | Wrong commanded EPC pressure. Digital TR reading the wrong gear position. | Go To PINPOINT TEST C . |
| P0705 | Digital TR sensor | Digital TR circuit failure | Digital TR circuits, indicating an invalid pattern in TR_D. Condition caused by a short to ground or an open in TR4, TR3A, TR2, and or TR1 circuits. This DTC cannot be set by an incorrectly adjusted digital TR sensor. | Increase in EPC pressure (harsh shifts). Defaults to (D) or D for all gear positions. In (D) position trans stuck in D or manual 2. | Go To PINPOINT TEST C . |
| P0707 | Digital TR sensor, wiring, PCM | Digital TR sensor circuit below minimum voltage | Digital TR sensor, circuit or PCM shorted or grounded. | Increase in EPC pressure. | Go To PINPOINT TEST C . |
| P0708 | Digital TR | Digital TR sensor circuit TR3A open | Digital TR sensor circuit TR3A reading 2.6v - 5.0v (open circuit). This DTC cannot be set by an incorrectly adjusted digital TR sensor. | Increase in EPC pressure. Defaults to (D)or D for all gear ranges. | Go To PINPOINT TEST C . |
| P1705 | Digital TR sensor | Digital TR self test was not carried out in PARK or NEUTRAL | Vehicle not in PARK or NEUTRAL during on-board diagnostic. | Rerun on-board diagnostic in PARK or NEUTRAL. | Go To PINPOINT TEST C . |
| P0712 | TFT, wiring, PCM | 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. | Go To PINPOINT TEST B . |
| P0713 | TFT, wiring, PCM | -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. | Go To PINPOINT TEST B . |
| P1710 | TFT | TFT sensor in range malfunction | PCM detected TFT not changing. | Firm shift, TCIL flashing, increase in EPC. | Go To PINPOINT TEST B . |
| P1711 | TFT | TFT out of on-board diagnostic range | Transmission not at operating temperature during on-board diagnostic. | Warm vehicle to normal operating temperature. | Go To PINPOINT TEST B . |
| P1713 | TFT wiring PCM | TFT continually reading cold | TFT sensor in range low failure. | Firm shift feel. Substitute ECT for TFT | Go To PINPOINT TEST B . |
| P1718 | TFT, wiring, PCM | TFT continually reading hot | TFT sensor in range high failure. | Firm shift feel. Substitute ECT for TFT | Go To PINPOINT TEST B . |
| P1783 | TFT | Transmission over temperature condition indicated | Transmission fluid temperature exceeded 127°C (270°F). | Increase in EPC pressure. | Go To PINPOINT TEST B . |
| P0720 | 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. | Go To PINPOINT TEST E . |
| P0721 | OSS | OSS sensor signal noisy | PCM has detected an erratic OSS signal. | Harsh shifts, abnormal shift schedule, no torque converter clutch engagement. | Go To PINPOINT TEST E . |
| P0722 | OSS wiring | Insufficient input from OSS | PCM has detected a loss of OSS signal. | Harsh shifts, abnormal shift schedule, no torque converter clutch engagement. | Go To PINPOINT TEST E . |
| P0741 (May also be generated by some other non-electric transmission hardware system.) | TCC, internal components | TCC slippage detected | The PCM picked up an excessive amount of slippage during normal vehicle operation. | TCC slippage/erratic or no torque converter clutch operation. Flashing Transmission Control Indicator Lamp (TCIL). | GO to DIAGNOSIS BY SYMPTOM . |
| P0743 (Output circuit check, generated only by electrical symptoms.) | TCC, wiring, PCM | TCC solenoid circuit failure during on-board diagnostic | TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM driver 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. | Go To PINPOINT TEST A . |
| P1746 (Output circuit check, generated only by electrical symptoms.) | EPC, wiring, PCM | Shorted PCM output driver | Voltage through EPC solenoid is checked. An error will be noted if tolerance is exceeded. | Open circuit causes maximum EPC pressure, harsh engagements and shifts. | Go To PINPOINT TEST D . |
| P1747 (Output circuit check, generated only by electrical symptoms.) | EPC, wiring, PCM | 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). | Go To PINPOINT TEST D . |
| P1760 | EPC, wiring, PCM | EPC solenoid circuit failure, shorted circuit or output driver | PCM detected a loss of EPC during operation. | Unexpected reduction in engine torque. | Go To PINPOINT TEST D . |
| P0750 (Output circuit check, generated only by electrical symptoms.) | SSA, wiring, PCM | SSA solenoid circuit failure | SSA circuit failed to provide voltage drop across solenoid. Circuit open or shorted or PCM driver failure during on-board diagnostic. | Incorrect gear selection depending on condition mode and manual lever position. See Solenoid On/Off Chart. | Go To PINPOINT TEST A . |
| P0753 | SSA, wiring, PCM | SSA electrical circuit failure | SSA circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM driver failure during on-board diagnostic. | Incorrect gear depending on condition mode and manual lever position. See SOLENOID OPERATION CHART . Flashing Transmission Control Indicator Lamp (TCIL). | Go To PINPOINT TEST A . |
| P0751 | SSA, wiring, PCM | Shift solenoid A functional failure | Mechanical or hydraulic failure of the shift solenoid. | Incorrect gear selection depending on failure mode manual lever position. | REFER to SOLENOID OPERATION CHART . Go To PINPOINT TEST A . |
| P0781 (May also be generated by some other non-electric transmission hardware system.) | SSA or internal parts | 1-2 shift error | Engine rpm drop not detected when 1-2 shift was commanded by PCM. | 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 friction material). | REFER to SOLENOID OPERATION CHART . Go To PINPOINT TEST A . |
| P1714 | SSA, internal components | SSA malfunction | Mechanical failure of the solenoid detected. | Incorrect gear selection depending on condition, mode and manual lever position. See SOLENOID OPERATION CHART . | Go To PINPOINT TEST F . |
| P0755 (Output circuit check, generated only by electrical symptoms.) | SSB, wiring, PCM | SSB solenoid circuit failure | SSB circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM driver failure during on-board diagnostic. | Incorrect gear selection depending on condition mode and manual lever position. See Solenoid On/Off Chart. | Go To PINPOINT TEST A . |
| P0756 | SSB | Shift solenoid B functional failure | Mechanical or hydraulic failure of the shift solenoid. | Incorrect gear selection depending on failure mode and manual lever position. | REFER to SOLENOID OPERATION CHART . Go To PINPOINT TEST A . |
| P1715 | SSB | SSB malfunction | Mechanical failure of the solenoid detected. | Incorrect gear selection depending on condition, mode and manual lever position. See SOLENOID OPERATION CHART . | Go To PINPOINT TEST F . |
| P0758 | SSB, wiring, PCM | SSB electrical circuit failure | SSB circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM driver failure during on-board diagnostic. | Incorrect gear depending on condition mode and manual lever position. See SOLENOID OPERATION CHART . Flashing Transmission Control Indicator Lamp (TCIL). | Go To PINPOINT TEST A . |
| P0782 (May also be generated by some other non-electric transmission hardware system.) | SSA, SSB or internal parts | 2-3 shift error | Engine rpm drop not detected when 2-3 shift was commanded by PCM. | 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 friction material). | REFER to SOLENOID OPERATION CHART . Go To PINPOINT TEST A . |
| P0783 (May also be generated by some other non-electric transmission hardware system.) | SSA, SSB or internal parts | 3-4 shift error | Engine rpm drop not detected when 3-4 shift was commanded by PCM. | 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 friction material). | REFER to SOLENOID OPERATION CHART . Go To PINPOINT TEST A . |
| P0740 | TCC, wiring, PCM | TCC electrical circuit failure | TCC circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM driver failed 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. Flashing Transmission Control Indicator Lamp (TCIL). | Go To PINPOINT TEST A . |
| P1740 | TCC | TCC malfunction | Mechanical failure of the solenoid detected. | Failed ON - Engine stalls in 2nd (O/D, Manual 2 ranges) at low idle speeds with brake applied. Failed OFF - Torque Converter never applies. | Go To PINPOINT TEST F . |
| P1741 (May also be generated by some other non-electric transmission hardware system.) | TCC, internal components | 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. | Go To PINPOINT TEST A . |
| P1742 | TCC, internal components | TCC solenoid failed ON | TCC solenoid has failed on by electric, mechanical or hydraulic concern. | Harsh shifts. | Go To PINPOINT TEST A . |
| P1743 | TCC, internal components | TCC solenoid failed ON | TCC solenoid has failed ON by electric, mechanical or hydraulic concern. | Harsh shifts. | Go To PINPOINT TEST A . |
| P1744 | TCC | TCC | The PCM picked up an excessive amount of TCC slippage during normal vehicle operation. | TCC slippage/erratic or no torque converter clutch operation. | GO to DIAGNOSIS BY SYMPTOM . |
| P1767 | TCC | TCC solenoid circuit failure during OBD Test | TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM Driver failure during OBD Test. | Short circuit: engine stalls in second (O/D, 2 range) at low idle speeds with brake applied. Open circuit: Torque Converter never engages. | Go To PINPOINT TEST A . |
| P1709 | PNP switch | PNP switch out of self-test range | Vehicle not in PARK or NEUTRAL during on-board diagnostic. | Rerun on-board diagnostic in PARK or NEUTRAL. | Go To PINPOINT TEST C . |