P0D6E

What it means

P0D6E is a generic code meaning the control unit monitoring the electric A/C compressor motor has seen the motor's supply or drive voltage (circuit 'A') higher than expected. It applies to hybrid and electric vehicles with a high-voltage compressor. The exact circuit measured and the limits used depend on the model, so check the manufacturer data for the vehicle.

Symptoms

• A/C blows warm or does not cool properly
• A/C compressor will not run or cuts out
• Warning light on, such as the hybrid system, check engine or A/C fault message
• A/C button or climate control shows a fault or is disabled
• Other high-voltage or compressor inverter codes stored alongside

Possible causes

• Fault in the compressor's built-in inverter or motor drive electronicslikely
• High-voltage supply to the compressor reading too high because of a fault in the high-voltage system or its voltage controlpossible
• Damaged, corroded or loose wiring or connectors at the compressor or its high-voltage and low-voltage feedspossible
• Faulty voltage sensing or signal circuit giving a false high readingpossible
• Fault in the controlling module, or an outdated calibration where the manufacturer lists one as a known causerare
• Abnormal refrigerant pressure or wrong compressor oil causing the drive to behave erraticallyrare

How to diagnose

1. Read all stored and pending codes and the freeze frame data. Note the vehicle state, voltage readings and A/C demand when the code set.
2. Check for related high-voltage, inverter, DC converter or A/C pressure codes, and deal with those first as they may be the root cause.
3. Look at the A/C system for obvious problems such as low refrigerant charge, a blocked condenser or damaged pipes, and check the manufacturer's data for the model.
4. Carefully inspect the compressor connectors and wiring for damage, corrosion, water ingress or chafing. Only technicians trained in high-voltage systems should disconnect or work on orange high-voltage components.
5. Using live data, compare the reported compressor voltage with the high-voltage battery voltage and the low-voltage supply. Look for readings outside the manufacturer's specification.
6. Have a high-voltage-trained technician make the system safe and test the compressor circuit and insulation resistance against the manufacturer's procedure.
7. Check for manufacturer service bulletins or software updates relating to this code on the specific model.
8. Confirm the diagnosis before replacing any part, using the manufacturer's test procedure for the compressor and its drive circuit.

How to fix

• Repair or replace damaged wiring, connectors or terminals in the compressor circuit.
• Replace the electric A/C compressor, or its inverter if supplied separately, once it is confirmed faulty, and refill with the correct oil and refrigerant.
• Repair any fault in the high-voltage supply or voltage control found during testing.
• Correct refrigerant charge, restrictions or contamination if these are affecting compressor operation.
• Apply a manufacturer calibration or software update only where a bulletin lists it as the fix for this fault.

Can I keep driving?

Nearby codes

• P0D6DGenericA/C Compressor Motor Voltage A Low
• P0D6FGenericA/C Compressor Motor Current High