B3779
Air Flow Control 9
B3779 is an OBD-II diagnostic trouble code meaning: Air Flow Control 9. Common causes: malfunction of the mass air flow sensor (maf), problems with the absolute pressure (map) sensor. Estimated repair cost: $56–167.
Symptoms
- Unstable idling
- Reduced engine power
- Increased fuel consumption
- Dips when pressing the gas pedal
- Malfunction indicator light comes on
Causes
- Malfunction of the mass air flow sensor (MAF)
- Problems with the absolute pressure (MAP) sensor
- Dirty or faulty throttle valve
- Open or short circuit in wiring harness
- Dirty air filter
- Problems with the air intake system
How to Fix
- Diagnosing error codes with an OBD-II scanner
- Visual inspection of the air path and wiring harness
- Checking the MAF and MAP readings
- Cleaning or replacing the throttle body
- Replacing the air filter
- Cleaning or replacing faulty sensors
Related codes
Error B3779 by Vehicle Brand
FAQ
What does the B3779 code mean?
B3779 is an OBD-II diagnostic trouble code that indicates: Air Flow Control 9
What causes a B3779 error code?
The most common causes of B3779 include: Malfunction of the mass air flow sensor (MAF); Problems with the absolute pressure (MAP) sensor; Dirty or faulty throttle valve; Open or short circuit in wiring harness.
How do I fix a B3779 diagnostic trouble code?
To fix B3779: Diagnosing error codes with an OBD-II scanner. Visual inspection of the air path and wiring harness. Checking the MAF and MAP readings. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3779?
Limited driving only, diagnose soon
How much does it cost to fix B3779?
The estimated repair cost for B3779 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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