U02C1
Lost Communication With Hybrid/EV Electronics Coolant Pump C
U02C1 is an OBD-II diagnostic trouble code meaning: Lost Communication With Hybrid/EV Electronics Coolant Pump C. Common causes: open or short circuit in the pump circuit, electronic coolant pump malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced vehicle power
- Switching to emergency mode
- Possible error message on the display
- Overheating of electronic components
Causes
- Open or short circuit in the pump circuit
- Electronic coolant pump malfunction
- Problems with the connector or wiring harness
- Control module malfunction
- Problems in the CAN network
How to Fix
- Check fuses and pump relays
- Diagnose the condition of the coolant pump
- Check the integrity of the wiring harness and connectors
- Scan the CAN network for errors
- Replace the faulty pump if necessary
Related codes
Error U02C1 by Vehicle Brand
FAQ
What does the U02C1 code mean?
U02C1 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Hybrid/EV Electronics Coolant Pump C
What causes a U02C1 error code?
The most common causes of U02C1 include: Open or short circuit in the pump circuit; Electronic coolant pump malfunction; Problems with the connector or wiring harness; Control module malfunction.
How do I fix a U02C1 diagnostic trouble code?
To fix U02C1: Check fuses and pump relays. Diagnose the condition of the coolant pump. Check the integrity of the wiring harness and connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U02C1?
Do not drive — repair immediately
How much does it cost to fix U02C1?
The estimated repair cost for U02C1 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat