P0D9C

What it means

P0D9C is the generic code for a high input on the temperature sensor A circuit in the battery charger coupler, which is the charge inlet or connector on a plug-in hybrid or electric vehicle. The control unit saw a signal voltage from the sensor circuit above the expected range, which usually points to an open circuit, a short to voltage or a failed sensor. The exact sensor location and the way the car responds depend on the model.

Symptoms

• Warning light on the dashboard, such as a charging system or hybrid system warning
• Car will not charge, or charging stops shortly after starting
• Charging runs at a reduced rate
• Charge port or inlet feels hotter than normal, or the plug will not lock or release properly
• Charging works on some chargers or cables but not others
• Charging fault message shown on the dashboard or in the app

Possible causes

• Open circuit or poor connection in the coupler temperature sensor wiring or connectorlikely
• Faulty charge inlet temperature sensorlikely
• Corrosion, moisture or damaged pins in the charge inlet or sensor connectorpossible
• Sensor signal wire shorted to a voltage supplypossible
• Fault in the charger or charge control unit that reads the sensorrare
• Outdated or faulty control unit software, where the manufacturer has issued a fix for this coderare

How to diagnose

1. Read all stored codes and freeze frame data, and note whether the fault is current or intermittent and whether other charging or high voltage codes are present
2. Check for manufacturer service bulletins or known issues for the specific model
3. Visually inspect the charge inlet, pins and seals for heat damage, moisture, debris, corrosion or bent terminals
4. Inspect the sensor wiring and connectors between the inlet and the control unit for chafing, pushed-out pins or water ingress
5. Use live data to view the coupler temperature reading, and compare it with the ambient temperature when the car has been sitting. An implausibly high or fixed value suggests an open circuit or short
6. Following the manufacturer's procedure and observing high voltage safety rules, test the sensor resistance and the circuit for continuity, short to voltage and reference voltage
7. Check the control unit connector and the supply and ground to the control unit
8. Clear the code and retest by charging, to confirm whether the fault returns

How to fix

• Repair or replace damaged wiring or connectors in the sensor circuit
• Clean or replace a corroded or damaged charge inlet connector, and fix the cause of water ingress
• Replace the temperature sensor or charge inlet assembly if it is faulty, following the manufacturer's procedure
• Repair any short to voltage in the sensor signal wire
• Update the control unit software if the manufacturer lists it as a fix, or replace the control unit if it is confirmed faulty

Can I keep driving?

Nearby codes

• P0D9BGenericBattery Charger Coupler Temperature Sensor A Circuit Low
• P0D9DGenericBattery Charger Coupler Temperature Sensor A Circuit Intermittent/Erratic