P0A01
Motor Electronics Coolant Temperature Sensor Range/Performance
The motor electronics coolant temperature sensor reading is implausible relative to other thermal models or coolant flow estimates.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: shop_only
Common causes
Ordered by how often each turns out to be the cause.
- Sensor driftCommon
- Low coolant flowPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Motor Electronics Coolant Temperature Sensor
- Electric Coolant Pump
P0A01 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.