P0BD2Drive Motor Inverter Temperature Sensor C Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0BD2 checks whether inverter temperature sensor C, GM's second sensor in the motor A inverter, agrees with the other temperatures after a cold soak. More than 20 °C apart sets it: Type B, two trips, on the 2016 Volt; Type A in a 2019 table; Type A on the 2011 Volt and 2016 ELR, compared with coolant and transmission temperature after 6 h off. GM's 2012 and 2013 tables use 15 °C after 360 min. GM bulletin PIC6303A says that on 2016-18 Volt, Malibu, LaCrosse and Regal the code alone needs no repair; the inverter is replaced only with P0AC4. GM fixes it by software on the 2017 Bolt EV and Ampera-e. Porsche replaces a coolant hose with a sticking thermostat on the Cayenne S E-Hybrid.
- What you may notice
- Malfunction indicator lamp, often without drivability change
- Propulsion power reduced message (Bolt EV)
- Red hybrid warning in the cluster (Porsche)
- Likely causes
- PossibleInverter module software (GM bulletin 18-NA-064, Bolt EV/Ampera-e)
- PossibleSticking thermostat in the power electronics coolant hose (Porsche Cayenne S E-Hybrid)
- PossibleInverter temperature sensor C drifting out of tolerance
- RareFailing power inverter module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.