Powertrain
generic / SAE
P2394
Diesel Intake Air Flow B Control Stuck Open
Diesel intake air flow valve B is mechanically stuck open - the ECU cannot close it for anti-shudder shutdown or EGR mixing assistance.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / 94
Possible causes
- Valve stuck open due to soot or broken linkage high
- Carbon or debris buildup preventing free movement low
- Component wear with age - mechanical play low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 200–1000 €
- Estimated time: 1–4 h
- Component: diesel intake air flow b
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012