U02C1

Lost Communication With Hybrid/EV Electronics Coolant Pump C

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

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

U02C0 U02C2 U02C3