B0249
Air Flow Control 3 Circuit Range
B0249 is an OBD-II diagnostic trouble code meaning: Air Flow Control 3 Circuit Range. Common causes: air flow sensor malfunction, open or short circuit in control circuit. Estimated repair cost: $56–167.
Symptoms
- Incorrect operation of the ventilation or climate control system
- Unstable temperature in the cabin
- Check Engine Light Illuminates
Causes
- Air flow sensor malfunction
- Open or short circuit in control circuit
- Problems with the control unit (ECU)
- Mechanical faults (clogged air ducts, faulty damper)
How to Fix
- Check the integrity of the air flow control circuit 3
- Check the air flow sensor for malfunctions
- Inspect mechanical components (dampers, ducts)
- If necessary, replace faulty components
- Reset the error and check if it returns
Related codes
Error B0249 by Vehicle Brand
FAQ
What does the B0249 code mean?
B0249 is an OBD-II diagnostic trouble code that indicates: Air Flow Control 3 Circuit Range
What causes a B0249 error code?
The most common causes of B0249 include: Air flow sensor malfunction; Open or short circuit in control circuit; Problems with the control unit (ECU); Mechanical faults (clogged air ducts, faulty damper).
How do I fix a B0249 diagnostic trouble code?
To fix B0249: Check the integrity of the air flow control circuit 3. Check the air flow sensor for malfunctions. Inspect mechanical components (dampers, ducts). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0249?
Do not drive — repair immediately
How much does it cost to fix B0249?
The estimated repair cost for B0249 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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