DTC P14A0 (2020)
DTC P14A0: Engine Abnormal Vibration
General Description
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 detected by the powertrain control module (PCM), the rpm range is limited. 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 | 13.2 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
Drive the vehicle for 13.2 seconds or more.
- 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.