B3770
Air Flow Control Feedback Circuit Actuator Range/Performance
B3770 is an OBD-II diagnostic trouble code meaning: Air Flow Control Feedback Circuit Actuator Range/Performance. Common causes: dirty or stuck throttle valve, air control solenoid valve malfunction. Estimated repair cost: $33–111.
Symptoms
- Unstable engine idling
- Reduced engine power
- Increased fuel consumption
- Check Engine Light Illuminates
Causes
- Dirty or stuck throttle valve
- Air control solenoid valve malfunction
- Open or short circuit in wiring harness
- Poor contact in control circuit connectors
- Throttle Position Sensor Malfunction
How to Fix
- Check the condition of the throttle valve, clean if necessary
- Check the resistance and operation of the solenoid valve
- Inspect the wiring harness for damage
- Check the contacts in the control circuit connectors
- Test the throttle position sensor
- If necessary, replace faulty components
Related codes
Error B3770 by Vehicle Brand
FAQ
What does the B3770 code mean?
B3770 is an OBD-II diagnostic trouble code that indicates: Air Flow Control Feedback Circuit Actuator Range/Performance
What causes a B3770 error code?
The most common causes of B3770 include: Dirty or stuck throttle valve; Air control solenoid valve malfunction; Open or short circuit in wiring harness; Poor contact in control circuit connectors.
How do I fix a B3770 diagnostic trouble code?
To fix B3770: Check the condition of the throttle valve, clean if necessary. Check the resistance and operation of the solenoid valve. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3770?
Limited driving only, diagnose soon
How much does it cost to fix B3770?
The estimated repair cost for B3770 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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