P0A0F critical

Drive Motor A Position Sensor Circuit High

The P0A0F code means the vehicle's onboard diagnostic system has detected: Drive Motor A Position Sensor Circuit High. This is a critical severity code.

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Keep driving?: No -- stop driving
DIY difficulty: hard
Estimated cost: $400 - $1,200 (parts and labor)

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Common Symptoms

Check Engine Light on
Hybrid system disabled
No electric motor operation
Possible harsh engagement when starting

Probable Causes (Ranked by Likelihood)

Short to voltage in motor position sensor circuit Very High
Failed motor position sensor High
Wiring harness chafing against power source Moderate
Failed sensor power supply circuit Low

Step-by-Step Diagnostic Procedure

Check sensor circuit for shorts to battery voltage with sensor disconnected.
Inspect wiring harness routing for contact with power wires or hot surfaces.
Measure sensor power supply voltage and compare to specification.
Test sensor output by manually rotating the motor if possible.

Frequently Asked Questions

What is the difference between P0A0E and P0A0F?

P0A0E indicates a low signal (possible short to ground), while P0A0F indicates a high signal (possible short to battery voltage). Both disable the hybrid drive system.

Can I reset P0A0F and continue driving?

You can clear the code, but it will return immediately if the fault is still present. The hybrid system will remain disabled until the underlying issue is repaired.

Is the motor position sensor covered under warranty?

The motor position sensor is part of the hybrid powertrain and is typically covered under the extended hybrid warranty of 8-10 years or 100,000 to 150,000 miles.