OBD-II code · Powertrain (generic)
P0E7B Auxiliary Cooling Coolant Temperature Sensor A Circuit
The ECM detects a circuit fault on the auxiliary cooling coolant temperature sensor a circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0E7B?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor failed
- PossibleWiring or connector fault
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
- P0E78Coolant Bypass Valve B Control Circuit Low
- P0E79Coolant Bypass Valve B Control Circuit High
- P0E7ACoolant Bypass Valve B Performance
- P0E7CAuxiliary Cooling Coolant Temperature Sensor A Circuit Range/Performance
- P0E7DAuxiliary Cooling Coolant Temperature Sensor A Circuit Low
- P0E7EAuxiliary Cooling Coolant Temperature Sensor A Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.