P0A14 to P0A29: engine mount, motor and generator torque sensors, battery power off
In a hybrid, the control circuit of the active engine mount, the torque sensor of the drive motor or of the generator, or the circuit that switches the high voltage battery off has a fault.
SeverityHighCarrying on can cause expensive damage, so deal with it now.
Can you keep driving?Only as far as the workshopWhat does P0A14 mean?
These are three different parts of a hybrid drivetrain. The active engine mount damps the engine's vibration as it starts and stops, and its fault is mostly felt as shaking. The motor and generator torque sensors tell the hybrid system how much force each electric machine is producing, which it needs to blend them with the engine; a fault usually means reduced power. The battery power off circuit commands the contactors that connect and disconnect the high voltage battery, a safety function: if it fails, the system may refuse to start or shut down to stay safe.
What causes P0A14?
- A damaged wire or connector to the active mount, which sits near heat and movement
- A failed motor or generator torque sensor, or wiring inside the drive unit
- A fault in the battery power off circuit or in the contactors it controls
- Water or corrosion in high voltage connectors, after a leak or driving through deep water
What to check first for P0A14
- Note whether the car shakes on engine start, has reduced power, or will not get to ready
- Have the hybrid system's own codes read with a tool that reaches it
- Ask whether the car has been through deep water or had damage underneath
- Leave anything on the high voltage system, orange cables included, to a workshop trained for hybrids
Can you drive with P0A14?
If only the engine mount code is stored and the car drives normally, you can drive to a workshop. With a torque sensor or battery power off code, drive only if the car reaches ready and pulls normally, and have it towed if it shuts down or shows the hybrid warning.
Since May 2018 an engine warning light that stays on is a major defect at the MOT, so the car fails until the fault is fixed.
Codes on this page
16
- P0A14Engine Mount Control Circuit/Open
- P0A15Engine Mount Control Circuit Low
- P0A16Engine Mount Control Circuit High
- P0A17Motor Torque Sensor Circuit
- P0A18Motor Torque Sensor Circuit Range/Performance
- P0A19Motor Torque Sensor Circuit Low
- P0A20Motor Torque Sensor Circuit High
- P0A21Motor Torque Sensor Circuit Intermittent
- P0A22Generator Torque Sensor Circuit
- P0A23Generator Torque Sensor Circuit Range/Performance
- P0A24Generator Torque Sensor Circuit Low
- P0A25Generator Torque Sensor Circuit High
- P0A26Generator Torque Sensor Circuit Intermittent
- P0A27Battery Power Off Circuit
- P0A28Battery Power Off Circuit Low
- P0A29Battery Power Off Circuit High
Related codes
Checked on · Rafael Soares
These are the generic meanings every manufacturer shares. Each brand adds its own detail, so your car's handbook, its service information and a qualified mechanic have the last word. OdoKeep has no connection with any manufacturer, and the app does not read codes from the car.
