P2390
Diesel Intake Air Flow B Control Circuit/Open
P2390 is an OBD-II diagnostic trouble code meaning: Diesel Intake Air Flow B Control Circuit/Open. Common causes: open or short circuit in wiring harness, air flow sensor malfunction. Estimated repair cost: $17–89.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Deterioration in acceleration dynamics
- Increased fuel consumption
- Unstable operation at idle
Causes
- Open or short circuit in wiring harness
- Air flow sensor malfunction
- Problems with the control solenoid valve
- Corrosion of contacts or connectors
- Engine control unit malfunction
How to Fix
- Check the integrity of the wiring harness and connectors
- Test the air flow sensor
- Check the resistance and operation of the solenoid valve
- Clean contacts from corrosion
- If necessary, replace faulty components
Related codes
Error P2390 by Vehicle Brand
FAQ
What does the P2390 code mean?
P2390 is an OBD-II diagnostic trouble code that indicates: Diesel Intake Air Flow B Control Circuit/Open
What causes a P2390 error code?
The most common causes of P2390 include: Open or short circuit in wiring harness; Air flow sensor malfunction; Problems with the control solenoid valve; Corrosion of contacts or connectors.
How do I fix a P2390 diagnostic trouble code?
To fix P2390: Check the integrity of the wiring harness and connectors. Test the air flow sensor. Check the resistance and operation of the solenoid valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2390?
Yes, but get it checked soon
How much does it cost to fix P2390?
The estimated repair cost for P2390 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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