P23C3
Engine Coolant Bypass Valve C Position Sensor Circuit
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Check Engine Light Is On
- Possible engine overheating
- Unstable engine operation
- Increased fuel consumption
- Incorrect operation of the cooling system
Causes
- Coolant bypass valve position sensor malfunction
- Open or short circuit in sensor wiring
- Poor contact in sensor connectors
- Engine control module (ECU) malfunction
- Damaged coolant bypass valve
How to Fix
- Check the sensor wiring and connectors for damage or corrosion.
- Check the coolant bypass valve position sensor using a multimeter.
- Replace the coolant bypass valve position sensor if it is faulty.
- Check the ECU for errors and reprogram it if necessary.
- Make sure the coolant bypass valve is working properly.
Related codes
Error P23C3 by Vehicle Brand
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