P0BDDDrive Motor Inverter Temperature Sensor E Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0BDD reports that the signal of inverter temperature sensor E, the phase W thermistor of GM's motor A inverter, sits below its valid range. GM uses an NTC thermistor with a pull-up on the sensing board, so a short to ground appears as an impossibly hot inverter. Thresholds: above 170 °C for 2.5 of 3.5 s, Type B, two trips, in the 2016 and 2018 tables; above 159 °C for 6.25 of 8.75 s, Type A, in a 2019 table; above 130 °C, Type A, on the 2011 Volt; above 125 °C, Type B, on the 2012 and 2013 two-mode trucks. A real overheat of that phase is reported separately as P0C13. With the sensor inside the inverter, the usual fix is the inverter assembly.
- What you may notice
- Malfunction indicator lamp and hybrid warning
- Drive motor A power strongly limited
- Reduced regenerative braking
- Likely causes
- LikelyShorted thermistor or signal line inside the power inverter module
- PossibleSignal shorted to ground in external wiring, where the design has any
- RareMoisture or coolant inside the inverter housing
- 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: €150 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.