P0D45Battery Charger 14 Volt Output Voltage Sensor Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- How the car detects it
- P0D45 is stored when the charger's 14 V output voltage sensor reads too high. GM's battery charger control module in the Volt and ELR fails it at a reading of 16.88 V or above for 400 of 500 ms; the 2011 table rates it Type A, the 2014 table Type B, meaning the MIL comes on only after two consecutive trips. That value lies above the normal regulation band of a 12 V system, so either a genuine overvoltage at the output or a sensor reading stuck high is possible. The low counterpart is P0D44, and the plausibility check P0D43 pauses while either code is active. As with its siblings, the fault sits in the charger's own low-voltage stage rather than in the car's main DC/DC converter.
- What you may notice
- MIL on (GM, after two trips in later model years)
- Charging may stop
- Likely causes
- LikelyVoltage sense signal shorted to a higher potential inside the charger
- PossibleCharger low-voltage stage regulating too high
- RareCharger module software
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.