P0D3B

What it means

P0D3B is a generic powertrain code meaning the control unit has detected a high signal on the input current sensor circuit for battery charger A. This relates to the on-board charger in a plug-in hybrid or electric vehicle. The controller saw a sensor voltage or reading above the expected range, which suggests a wiring fault, a sensor fault or a fault inside the charger itself.

Symptoms

• Warning light on, such as the hybrid system or EV system warning
• Vehicle will not charge from a mains or charge point supply
• Charging starts and then stops early
• Reduced charging speed or charge current
• Charge port indicator showing a fault or not responding
• Reduced electric driving range because the battery is not topping up

Possible causes

• Damaged, chafed or corroded wiring or connector at the charger input current sensor circuit, such as a short to voltagelikely
• Faulty input current sensor, either inside the charger unit or as a separate component, depending on the modellikely
• Internal fault in the on-board charger or its control electronicspossible
• Poor sensor reference supply or ground, causing a falsely high readingpossible
• Unstable or faulty supply from the charging equipment or mains, upsetting the sensor readingpossible
• Outdated control unit software where the manufacturer has issued a known correction for this faultrare

How to diagnose

1. Read all stored codes and freeze frame data, noting whether charging was active and what the input current reading was when the fault set
2. Check for related codes covering the charger, high voltage battery, low voltage supply or communication faults, and deal with those first if present
3. Try charging from a different known good supply or charge point to rule out the external equipment
4. Visually inspect the charger wiring, connectors and charge port for damage, water ingress, corrosion or loose pins, following the manufacturer's high voltage safety procedure
5. Check the low voltage battery condition and charging system, as poor supply can upset sensor readings
6. With the system made safe, test the sensor circuit for reference voltage, ground and short to voltage using the manufacturer's wiring diagram
7. Compare the live input current reading with expected values with the charger idle and while charging, as the procedure depends on the model
8. Check for manufacturer service bulletins or software updates relating to the charger

How to fix

• Repair or replace damaged wiring, terminals or connectors in the sensor circuit
• Replace the input current sensor if it can be supplied separately and is confirmed faulty
• Replace or repair the on-board charger if the internal sensor or electronics are confirmed faulty
• Correct supply or ground faults affecting the sensor circuit
• Update the control unit software only if the manufacturer lists it as a fix for this fault
• Clear the code after repair and complete a full charge cycle to confirm it does not return

Can I keep driving?

Nearby codes

• P0D3AGenericBattery Charger A Input Current Sensor Circuit Low
• P0D3CGenericBattery Charger A Input Current Sensor Circuit Intermittent/Erratic