P02FA
Diesel Intake Air Flow Position Sensor Minimum/Maximum Stop Performance
Generic OBD-II
Real-world scan data
Seen in
60
scans in the past year
Found in
<0.1%
of scans
<0.1%
of scans that found faults
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check the intake air flow sensor connection for any loose or damaged wires.
- Clean the intake air flow sensor using an appropriate cleaner and ensure it is functioning properly.
- Inspect the intake air filter and replace if it is dirty or clogged.
- Check for any vacuum leaks in the intake system and repair if necessary.
- If all else fails, consider replacing the intake air flow sensor.
Common causes
Most likely first
- Faulty diesel intake air flow position sensor
- Clogged or dirty air filter
- Vacuum leak in the intake system
- Issues with the diesel intake air flow control valve
How to diagnose & fix
Work through it in order
- Reduced engine power or loss of power
- Engine hesitation or stumbling
- Decreased fuel efficiency
- Difficulty starting the engine
- Check engine light illuminated
Read & clear P02FA yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.