P006AMAP - Mass or Volume Air Flow Correlation 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
- The engine control module compares the air quantity measured by the mass air flow sensor with the quantity it calculates from manifold pressure, engine speed and temperature. P006A is set when the two deviate too far. A typical cause is an exhaust gas recirculation valve that does not close: recirculated exhaust raises manifold pressure without passing the air flow sensor. Air leaks, a leaking crankcase ventilation hose or a dirty sensor have the same effect. Each sensor can be electrically fine on its own; regulations require such plausibility checks for input sensors with a code of their own.
- What you may notice
- Check engine light on
- Rough running
- Slight hesitation when accelerating
- Likely causes
- LikelyEGR valve dirty or sticking open
- PossibleAir leak or crankcase ventilation hose leaking
- PossibleMass air flow sensor dirty or manifold pressure sensor faulty
- RareAir filter or intake restricted
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.