DTC P14A0

DTC P14A0: Engine Abnormal Vibration

General Description

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

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

Engine resonance has the potential to cause severe engine damage. As a result, the flywheel is equipped with a high rate spring to help smooth out the transmission of power between the engine and the generator motor. But there are still certain RPM levels where resonance can cause vibration. When resonance is detected by the powertrain control module (PCM), the RPM range is avoided. This is also the case if resonance is caused by misfire, engine failure or generator motor failure.

Monitor Execution, Sequence, Duration, DTC Type

Execution	Continuous
Sequence	None
Duration	2.2 seconds or less
DTC Type	One drive cycle, MIL off

Enable Conditions

Condition
Fuel feedback	Other than during fuel cut-off operation
State of the vehicle*	HV driving mode
	Engine driving mode
	HV driving mode -> Engine driving mode
	Engine driving mode -> HV driving mode

*: In any of described driving condition

Malfunction Threshold

When vibration due to engine resonance has increased.

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.

Misfire (1 cylinder or 2 cylinder continuation misfires)

Confirmation Procedure

Operating Condition

The vehicle drive or stop for at least 2.2 seconds.

Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

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 PCM 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 or by disconnecting the 12 volt battery.