DTC P161B
DTC P161B : Park Pawl Control Module Programming Error
General Description
The park pawl actuator driver unit controls shifting/releasing of the park pawl actuator to/from the P position. A control program is stored in the park pawl actuator driver unit which confirms whether the control program is correctly written on start-up. If an abnormal condition of the control program is detected, the powertrain control module (PCM) receives malfunction from the park pawl actuator driver unit, and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | - |
| Sequence | None |
| Duration | Depending on the driving conditions |
| DTC Type | One drive cycle, MIL off, shift position indicator blinks |
Enable Conditions
| Condition | |
|---|---|
| Vehicle | ON mode |
Malfunction Threshold
The abnormality or the unwritten condition is detected at the control program in the park pawl actuator driver unit.
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 driver unit internal failure
- PCM software data not updated
Confirmation Procedure
Operating Condition
Turn the vehicle to the ON mode, and wait for 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.