DTC P286D

DTC P286D:  Dog Clutch "A" Malfunction

General Description 

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

The transmission control module (TCM) monitors dog clutch A condition while shifting (R to D position/mode, N to D position/mode, P to D position/mode). If the complete engagement of dog clutch A cannot be confirmed for a specified time while shifting (R to D position/mode, N to D position/mode, P to D position/mode) which accompanies dog clutch A to engage, the TCM stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type 

Execution

Continuous

Sequence	None
Duration	1 second or more
DTC Type	One drive cycle, MIL off, A/T gear position indicator off

Enable Conditions 

Condition
State of the engine	Running
Shift position/mode	R → D, N → D, P → D

Malfunction Threshold 

Following conditions occur while shifting (R to D position/mode, N to D position/mode, P to D position/mode) which accompanies dog clutch A to engage.

• The TCM cannot confirm complete engagement of dog clutch A for at least 2 times during one drive cycle.
• The TCM cannot confirm complete engagement of dog clutch A for at least 3 times per 1, 243 miles (2, 000 km).

Possible Cause 

• Transmission internal failure

Confirmation Procedure 

Operating Condition 

• 1.

  Start the engine.

• 2.

  While pressing the brake pedal, shift the transmission from R position/mode to D position/mode.

• 3.

  While pressing the brake pedal, shift the transmission from N position/mode to D position/mode.

• 4.

  While pressing the brake pedal, shift the transmission from P position/mode to D position/mode.

• It may be difficult to reproduce the failure by the test-drive.

With the HDS 

None.

Diagnosis Details 

Conditions for setting the DTC 

When a malfunction is detected, a Pending DTC, a Confirmed DTC, and the freeze data are stored in the TCM memory. The MIL does not come on.

Conditions for clearing the DTC 

The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.