U0615
Lost Communication With Engine Coolant Bypass Valve A
U0615 is an OBD-II diagnostic trouble code meaning: Lost Communication With Engine Coolant Bypass Valve A. Common causes: broken or damaged wires in the valve circuit, poor contact in valve or ecu connectors. Estimated repair cost: $17–56.
Symptoms
- Check Engine light comes on
- Incorrect operation of the cooling system
- Increased engine temperature
- Changing engine performance
- Floating idle speed
Causes
- Broken or damaged wires in the valve circuit
- Poor contact in valve or ECU connectors
- Coolant bypass valve malfunction
- Problems with power or grounding of the circuit
- Malfunction of the electronic control unit (ECU)
How to Fix
- Check the integrity of wires and connectors in the valve circuit
- Perform a visual inspection of the valve for damage.
- Check valve resistance (compare with specifications)
- Test power and grounding in the circuit
- Replace the coolant bypass valve if necessary.
Related codes
Error U0615 by Vehicle Brand
FAQ
What does the U0615 code mean?
U0615 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Engine Coolant Bypass Valve A
What causes a U0615 error code?
The most common causes of U0615 include: Broken or damaged wires in the valve circuit; Poor contact in valve or ECU connectors; Coolant bypass valve malfunction; Problems with power or grounding of the circuit.
How do I fix a U0615 diagnostic trouble code?
To fix U0615: Check the integrity of wires and connectors in the valve circuit. Perform a visual inspection of the valve for damage.. Check valve resistance (compare with specifications). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0615?
Limited driving only, diagnose soon
How much does it cost to fix U0615?
The estimated repair cost for U0615 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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