OBD-II code · Powertrain (generic)
P0E7E Auxiliary Cooling Coolant Temperature Sensor A Circuit High
The ECM detects a high fault on the auxiliary cooling coolant temperature sensor a circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0E7E?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen sensor
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Aux Cooling Coolant Temp Sensor A, Wiring Harness
Related codes
- P0E7BAuxiliary Cooling Coolant Temperature Sensor A Circuit
- P0E7CAuxiliary Cooling Coolant Temperature Sensor A Circuit Range/Performance
- P0E7DAuxiliary Cooling Coolant Temperature Sensor A Circuit Low
- P0E7FAuxiliary Cooling Coolant Temperature Sensor A Circuit Intermittent/Erratic
- P0E80Battery Charger B Temperature Sensor Circuit
- P0E81Battery Charger B Temperature Sensor Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.