P2E4C
Battery Charger Coupler Temperature Sensor C Circuit Low
The ECM detects a circuit low fault on the battery charger coupler temperature sensor c circuit. Reading cannot be used reliably for control.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: easy
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Common causes
Ordered by how often each turns out to be the cause.
- Signal wire shorted to groundCommon
- Internal sensor shortPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Battery Charger Coupler Temp Sensor C
- Wiring Harness
- Bms
P2E4C 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.