DTC P171F
DTC P171F : Park Pawl System Stuck Malfunction After learning mode
General Description
The park pawl actuator driver unit controls shifting/releasing of the park pawl actuator to/from the P position. If the shifting to/releasing from P position operation does not complete for a specified length of time or more after a shifting to/releasing from P position command is output from the powertrain control module (PCM), the PCM receives malfunction from the park pawl actuator driver unit, and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | - |
| Sequence | None |
| Duration | 1.5 seconds or more |
| DTC Type | One drive cycle, MIL off, shift position indicator blinks |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [Battery Voltage] | 10.8 V | - |
| Vehicle | ON mode | |
Malfunction Threshold
The switching to the parking position or the non-parking position has not been completed for at least 1.5 seconds after the switching to the parking position or the non-parking position command is output from the PCM.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Park pawl actuator failure
- Park mechanism failure
Confirmation Procedure
Operating Condition
- Turn the vehicle to the ON mode, and wait at for least 10 seconds.
- While pressing the brake pedal, shift to N position/mode, then shift to P position/mode and wait at least 5 seconds.
With the HDS
None.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the shift position indicator blinks and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.
Conditions for clearing the DTC
The shift position indicator comes off by turning the vehicle to the OFF (LOCK) mode. The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.