P2BE3Hybrid/EV Battery Coolant Level Sensor Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2BE3 means the level sensor signal of the battery coolant loop is above its valid range, typically from a short to the sensor supply or to 12 V, or from a lost sensor ground. No manufacturer documents P2BE3 publicly. GM's code P1FFD on the Chevrolet Volt shows the same test with numbers: above 4.0 V, 40 of 50 samples at 100 ms, Type A. GM counts an open circuit as high there, so depending on the pull-up design a broken wire can end up under this code rather than P2BE0. GM bulletin PI0961 lists breaks inside the jumper harness of the sensor among the causes. CARB requires such range checks for hybrid inputs. The low side is P2BE2; the reservoir level should be checked before any part is replaced.
- What you may notice
- Hybrid system warning
- MIL on
- Charging possibly disabled
- Likely causes
- LikelyOpen sensor ground or open signal with pull-up (read as high)
- PossibleSignal wire shorted to sensor supply or 12 V
- PossibleLevel sensor output stuck high
- 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.