P237C
Exhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit/Open
P237C is an OBD-II diagnostic trouble code meaning: Exhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit/Open. Common causes: open or short circuit in valve control circuit, heat exchanger bypass valve malfunction. Estimated repair cost: $28–89.
Symptoms
- Check Engine Light Is On
- Deterioration of interior heating in cold weather
- Increased fuel consumption
- Unstable engine operation at idle
- Possible errors in temperature sensors
Causes
- Open or short circuit in valve control circuit
- Heat exchanger bypass valve malfunction
- Problems with the relay or circuit fuse
- Corrosion of contacts or connectors
- Engine control unit malfunction
How to Fix
- Check the fuse and relay of the corresponding circuit
- Inspect the wiring harness and connectors for damage.
- Check valve coil resistance
- Check valve operation when power is applied
- If necessary, replace the bypass valve
Related codes
Error P237C by Vehicle Brand
FAQ
What does the P237C code mean?
P237C is an OBD-II diagnostic trouble code that indicates: Exhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit/Open
What causes a P237C error code?
The most common causes of P237C include: Open or short circuit in valve control circuit; Heat exchanger bypass valve malfunction; Problems with the relay or circuit fuse; Corrosion of contacts or connectors.
How do I fix a P237C diagnostic trouble code?
To fix P237C: Check the fuse and relay of the corresponding circuit. Inspect the wiring harness and connectors for damage.. Check valve coil resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P237C?
Yes, but get it checked soon
How much does it cost to fix P237C?
The estimated repair cost for P237C is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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