U063D
Lost Communication With Hybrid/EV Electronics Coolant Pump A
U063D is an OBD-II diagnostic trouble code meaning: Lost Communication With Hybrid/EV Electronics Coolant Pump A. Common causes: open or short circuit in the pump circuit, pump motor malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Overheating of electronic components
- Noisy cooling pump
- Switching to emergency mode
Causes
- Open or short circuit in the pump circuit
- Pump motor malfunction
- Problems with connectors or wiring harness
- Pump control unit failure
- Problems in the CAN network
How to Fix
- Check fuses and pump relays
- Diagnose the power supply and pump control circuit
- Check the condition of the connectors and wiring harness
- Test the pump operation
- Check for ECU firmware updates
Related codes
Error U063D by Vehicle Brand
FAQ
What does the U063D code mean?
U063D is an OBD-II diagnostic trouble code that indicates: Lost Communication With Hybrid/EV Electronics Coolant Pump A
What causes a U063D error code?
The most common causes of U063D include: Open or short circuit in the pump circuit; Pump motor malfunction; Problems with connectors or wiring harness; Pump control unit failure.
How do I fix a U063D diagnostic trouble code?
To fix U063D: Check fuses and pump relays. Diagnose the power supply and pump control circuit. Check the condition of the connectors and wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U063D?
Limited driving only, diagnose soon
How much does it cost to fix U063D?
The estimated repair cost for U063D is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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