P0BE1Drive Motor Inverter Temperature Sensor F Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0BE1 is the plausibility check of inverter temperature sensor F, GM's phase W thermistor in the motor B inverter. After the car has stood long enough, its reading must match a reference: in the 2016 and 2018 tables a calculated average after cold soak, with more than 20 °C difference for 0.525 of 0.625 s setting Type B over two trips, Type A in a 2019 table. The 2011 Volt compares against power electronics coolant temperature (20 °C, Type A), the 2012 and 2013 two-mode trucks after 360 minutes off with a 15 °C limit (Type B). GM bulletin PIC6303A lists P0BE1 for 2016-18 Volt, Malibu, LaCrosse, Velite and Regal: no customer-noticeable reaction, inverter replacement only with P0AC4.
- What you may notice
- Malfunction indicator lamp after two drives, usually without drivability change
- Code found during inspection without customer complaint
- Likely causes
- PossiblePhase W thermistor of inverter B drifting out of tolerance
- PossibleUneven inverter cooling or residual heat after the soak period
- RareFailing power inverter module (replace only with P0AC4 per GM PIC6303A)
- 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.