P0D44Battery Charger 14 Volt Output Voltage Sensor Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- How the car detects it
- P0D44 is logged once the voltage sensor of the charger's 14 V output delivers an implausibly low raw value. In GM's charger module for the 2011-2014 Volt and the ELR the limit is a sensor signal of 1.87 V or less, held for 400 of 500 ms while the low-voltage section is awake; it is a Type A fault and lights the MIL. The 2016 ELR charger table also lists the code as a precondition for its output power checks, and GM's 14 V output power test P0D5B only runs without it. The output is a low-voltage DC stage built into the charger, not the vehicle's primary DC/DC converter. A grounded signal path or failed electronics inside the charger are typical; internal faults are cured only by reprogramming or replacing the charger.
- What you may notice
- MIL on (GM)
- Charging may stop or not complete
- Likely causes
- LikelyVoltage sense signal shorted to ground inside the charger
- PossibleFailed low-voltage stage of the on-board charger
- Rare14 V output collapsed by an external short or overload
- 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.