P2280Air Flow Restriction/Air Leak Between Air Filter and MAF (Bank 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2280 is the bank 1 code for restricted airflow or an air leak between the air filter and the MAF sensor. A blocked filter lowers the pressure ahead of the sensor and limits the air the engine can take in. A leak in this section matters less for fuel metering, since the air still passes the MAF, but it lets unfiltered air and dust reach the engine. FCA's heavy-duty Ram trucks with the 6.7 L Cummins diesel are the documented users: with 2016 software, bulletin 18-027-16 made P2280 wait for two trips instead of one before the MIL, and FCA tech tip 9003821 (2017) notes MIL events where oil-soaked intake filters were being replaced. FCA's older wording names the code without a bank. P227F is the bank 2 counterpart, P2281 covers the stretch from the MAF to the throttle.
- What you may notice
- MIL on
- Less power and slower boost build-up under load
- More smoke from diesel engines when accelerating
- Likely causes
- LikelyAir filter clogged or soaked with oil
- PossibleSnow, ice or debris in the air inlet, or a collapsed intake duct
- PossibleCracked duct or loose clamp between filter box and MAF
- RareEarly software that flags the condition too readily
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €20 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.