P237D
Exhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit Low
P237D is an OBD-II diagnostic trouble code meaning: Exhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit Low. 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
- Reduced engine power
- Deteriorating fuel economy
- Unstable engine operation at idle
- Problems with the EGR system
Causes
- Open or short circuit in valve control circuit
- Heat exchanger bypass valve malfunction
- Problems with the relay or circuit fuse
- Corrosion or poor contact in connectors
- Engine control unit (ECU) malfunction
How to Fix
- Check valve control circuit integrity
- Check valve resistance and operation
- Inspect connectors and contacts for corrosion
- Check fuses and relays of related circuits
- If necessary, replace the heat exchanger bypass valve
Related codes
Error P237D by Vehicle Brand
FAQ
What does the P237D code mean?
P237D is an OBD-II diagnostic trouble code that indicates: Exhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit Low
What causes a P237D error code?
The most common causes of P237D include: Open or short circuit in valve control circuit; Heat exchanger bypass valve malfunction; Problems with the relay or circuit fuse; Corrosion or poor contact in connectors.
How do I fix a P237D diagnostic trouble code?
To fix P237D: Check valve control circuit integrity. Check valve resistance and operation. Inspect connectors and contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P237D?
Yes, but get it checked soon
How much does it cost to fix P237D?
The estimated repair cost for P237D is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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