B0238
Air Flow Control 1 Circuit
B0238 is an OBD-II diagnostic trouble code meaning: Air Flow Control 1 Circuit. Common causes: open or short circuit in the control circuit wiring harness, oxidation of connector contacts. Estimated repair cost: $33–111.
Symptoms
- Unstable idle
- Reduced engine power
- Increased fuel consumption
- Check Engine Light Is On
Causes
- Open or short circuit in the control circuit wiring harness
- Oxidation of connector contacts
- Faulty solenoid valve (solenoid)
- Problems with the engine control unit
How to Fix
- Check the wiring harness for damage and reliability of connections.
- Clean connector contacts from oxides
- Check the solenoid resistance and functionality
- Scan the control unit for related errors
- Replace faulty components if necessary
Related codes
Error B0238 by Vehicle Brand
FAQ
What does the B0238 code mean?
B0238 is an OBD-II diagnostic trouble code that indicates: Air Flow Control 1 Circuit
What causes a B0238 error code?
The most common causes of B0238 include: Open or short circuit in the control circuit wiring harness; Oxidation of connector contacts; Faulty solenoid valve (solenoid); Problems with the engine control unit.
How do I fix a B0238 diagnostic trouble code?
To fix B0238: Check the wiring harness for damage and reliability of connections.. Clean connector contacts from oxides. Check the solenoid resistance and functionality. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0238?
Limited driving only, diagnose soon
How much does it cost to fix B0238?
The estimated repair cost for B0238 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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