P2B24Hybrid/EV Electronics Coolant Temperature Sensor C Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Some electrified drivetrains measure the power electronics coolant at three points, for example ahead of the inverter, behind it and at the charger or DC/DC converter. P2B24 covers the third of these sensors, C, and reports a circuit fault the controller does not classify further. Which component sensor C watches is not standardised and varies by make. No manufacturer documents P2B24 publicly. NTN-SNR lists the code as an electrical fault in the sensor C circuit. CARB treats every input that serves the inverter's thermal management as a monitored component, so an open or shorted line has to be caught. More specific results for the same sensor are P2B26 (low) and P2B27 (high). With one of several readings missing, controllers usually carry on with the remaining sensors but may lower power limits.
- What you may notice
- Stored fault code, possibly with a hybrid system message
- Lower charging or drive power in hot conditions
- Likely causes
- LikelyConnector or wiring fault in the sensor C circuit
- PossibleFailed sensor C element
- RareInput stage of the evaluating module faulty
- 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: €40 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.