P2BE2Hybrid/EV Battery Coolant Level Sensor Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2BE2 is stored when the voltage from the battery coolant level sensor falls below the lowest value the sensor can legitimately produce. That points to the signal touching ground or a sensor whose output collapses, not to a low coolant level, which normally reads inside the valid range. No manufacturer documents P2BE2 publicly. On the Chevrolet Volt GM uses its own code P1FFC for this case: below 1.37 V with the 12 V system above 10.2 V, 40 of 50 samples at 100 ms, Type A and MIL on the first trip. CARB requires out-of-range checks for such inputs. Because the controller no longer knows the level, it may restrict charging or hybrid operation. Open and high faults are P2BE0 and P2BE3.
- What you may notice
- Hybrid system warning
- MIL on
- Charging possibly disabled
- Likely causes
- LikelySignal wire chafed through and shorted to ground
- PossibleLevel sensor output stuck low
- PossibleSensor supply missing (connector, corrosion)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €30 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.