P0A2B: Drive Motor A Temperature Sensor A Circuit Range/Performance
What to do
A stuck-plausible reading is subtler than a dead one but the response is the same: wiring and connector first, sensor last. No urgency, but do not leave it — this sensor is the motor's overheat protection.
What this code means
The drive motor temperature reading is electrically alive but implausible — moving too slowly, stuck at one value, or disagreeing with every other temperature on the vehicle.
The classic version is the sensor that never warms up or never cools down: a reading frozen mid-range passes the electrical checks and fails this one. A thermistor drifting with age produces the same picture. The family's context — what the sensor protects and why the wiring is the first suspect — is at P0A2A.
Likely causes
Start here
- Faulty motor temperature sensor · specialist
- Corroded or loose connector · easy
Less common
- Sensor drifted out of calibration · specialist
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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