P2399
Diesel Intake Air Flow B Position Sensor Circuit High
P2399 is an OBD-II diagnostic trouble code meaning: Diesel Intake Air Flow B Position Sensor Circuit High. Common causes: air flow position sensor b malfunction, open or short circuit in wiring harness. Estimated repair cost: $28–89.
Symptoms
- Reduced engine power
- Unstable idling
- Increased fuel consumption
- Check engine light comes on
- Problems starting in cold weather
Causes
- Air flow position sensor B malfunction
- Open or short circuit in wiring harness
- Poor contact in electrical connector
- Air control damper/valve problems
- Engine ECU malfunction (rare)
How to Fix
- Check the condition of the air flow position sensor B
- Check the integrity of the wiring harness and contacts
- Test sensor resistance
- Check the operation of the air control damper/valve
- Replace sensor if necessary
Related codes
Error P2399 by Vehicle Brand
FAQ
What does the P2399 code mean?
P2399 is an OBD-II diagnostic trouble code that indicates: Diesel Intake Air Flow B Position Sensor Circuit High
What causes a P2399 error code?
The most common causes of P2399 include: Air flow position sensor B malfunction; Open or short circuit in wiring harness; Poor contact in electrical connector; Air control damper/valve problems.
How do I fix a P2399 diagnostic trouble code?
To fix P2399: Check the condition of the air flow position sensor B. Check the integrity of the wiring harness and contacts. Test sensor resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2399?
Limited driving only, diagnose soon
How much does it cost to fix P2399?
The estimated repair cost for P2399 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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