DTC P161B

DTC P161B: Park Pawl Control Module Programming Error

General Description

Courtesy of HONDA, U.S.A., INC.

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 control program in the park pawl actuator driver unit is not yet written, or an abnormal condition is detected.

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 10 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.