P0D4B
Battery Charger 14 Volt Output Current Sensor Circuit Intermittent/Erratic
The ECM detects a intermittent/erratic fault on the battery charger 14 volt output current sensor circuit. Reading cannot be used reliably for control.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Common causes
Ordered by how often each turns out to be the cause.
- Sensor connector not seatedCommon
- Noisy ground referencePossible
- Connector with intermittent contact under vibrationLess likely
Parts involved
- Battery Charger 14v Output Current Sensor
- Wiring Harness
- Bms
P0D4B is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.