P0A2D: Drive Motor A Temperature Sensor A Circuit High
What to do
If power dropped sharply when this appeared, the module is protecting against a temperature that almost certainly is not real — an important detail to pass on, because it moves the diagnosis from the motor to the wiring.
What this code means
The drive motor temperature circuit reads at the top of its range — on most thermistor circuits, the open-circuit direction.
An open here reads as an absurdly high temperature, and some vehicles respond by derating power as though the motor really were hot — so this variant is the one most likely to produce a driveability complaint from a purely electrical fault. A car that suddenly lost electric assistance and stored this code has a wiring problem presenting as a thermal one. See P0A2A for the family.
Likely causes
Start here
- Open circuit in sensor wiring · moderate
- Corroded or loose connector · easy
Less common
- Wiring shorted to voltage · moderate
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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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.
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