P0BD7Drive Motor Inverter Temperature Sensor D 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
- P0BD7 is the plausibility check for inverter temperature sensor D, GM's second sensor in the motor B inverter. After a cold soak its reading is compared with an average vehicle temperature; more than 20 °C apart sets the code, Type B, two trips, on the 2016 Volt and Type A in a 2019 table. The 2011 Volt compares with power electronics coolant and transmission temperature after 6 h off (20 °C, Type A); GM's 2012 and 2013 tables use 15 °C after 360 min, two trips. GM bulletin PIC6303A lists P0BD7 with the other inverter thermistor codes on 2016-18 Volt, Malibu, LaCrosse and Regal: alone it causes no noticeable effect, and the inverter is replaced only if P0AC4 set at the same time.
- What you may notice
- Malfunction indicator lamp, often after two trips
- Often no noticeable drivability change
- Further inverter temperature codes may be stored
- Likely causes
- PossibleInverter temperature sensor D drifting out of tolerance
- PossibleFailing power inverter module
- RareUneven inverter coolant flow after soak
- 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.