Powertrain
Definition only
Lights the check engine lamp
P2E4B: Battery Charger Coupler Temperature Sensor C Circuit Range/Performance
Standardized SAE J2012 code · P2Exx codes
What does P2E4B mean?
The ECM detects a range/performance fault on the battery charger coupler temperature sensor c circuit. Reading cannot be used reliably for control.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Common causes
- High Sensor characteristic drifted
- Medium Sensor mounting displaced
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2E4B on the same make and model first.
P2E4B in the community
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