OBD-II code · Powertrain (generic)
P0D40 Battery Charger A Input Voltage Sensor A Circuit High
The ECM detects a high fault on the battery charger a input voltage sensor a circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0D40?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen sensor
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Battery Charger A Input Voltage Sensor A, Wiring Harness, Bms
Related codes
- P0EFABattery Charger A Input Voltage Sensor B Circuit High
- P0D3DBattery Charger A Input Voltage Sensor A Circuit
- P0D3EBattery Charger A Input Voltage Sensor A Circuit Range/Performance
- P0D3FBattery Charger A Input Voltage Sensor A Circuit Low
- P0D41Battery Charger A Input Voltage Sensor A Circuit Intermittent/Erratic
- P0D42Battery Charger 14 Volt Output Voltage Sensor Circuit
- P0D43Battery Charger 14 Volt Output Voltage Sensor Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.