U0624
Lost Communication With Coolant Pump B
U0624 is an OBD-II diagnostic trouble code meaning: Lost Communication With Coolant Pump B. Common causes: open or short circuit in the pump circuit, pump motor malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Possible overheating of individual engine components
- Reduced cooling system efficiency
- Errors in the operation of the climate control (if the pump is connected to the heater)
Causes
- Open or short circuit in the pump circuit
- Pump motor malfunction
- Connector problems or contact corrosion
- Faulty relay or fuse
- ECU software error
How to Fix
- Check the pump fuse and relay
- Inspect connectors and wiring harness for damage
- Check the power supply and ground of the pump
- Test the resistance of the pump motor windings
- If necessary, replace coolant pump B
Related codes
Error U0624 by Vehicle Brand
FAQ
What does the U0624 code mean?
U0624 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Coolant Pump B
What causes a U0624 error code?
The most common causes of U0624 include: Open or short circuit in the pump circuit; Pump motor malfunction; Connector problems or contact corrosion; Faulty relay or fuse.
How do I fix a U0624 diagnostic trouble code?
To fix U0624: Check the pump fuse and relay. Inspect connectors and wiring harness for damage. Check the power supply and ground of the pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0624?
Limited driving only, diagnose soon
How much does it cost to fix U0624?
The estimated repair cost for U0624 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat