OBD-II code · Powertrain (generic)
P02E4 Diesel Intake Air Flow A Control Stuck Open
Diesel intake throttle A is mechanically stuck open — anti-shudder function on shutdown will not work and DPF regen airflow control is lost.
Is it safe to drive with P02E4?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyCarbon buildup or broken return spring
- Less likelyCarbon or debris buildup preventing free movement
- Less likelyComponent wear with age - mechanical play
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.7–3 h
- Emissions test
- Likely to fail
- Parts involved
- Diesel Intake Throttle
Related codes
- P02E0Diesel Intake Air Flow A Control Circuit/Open
- P2394Diesel Intake Air Flow B Control Stuck Open
- P02E1Diesel Intake Air Flow A Control Performance
- P02E2Diesel Intake Air Flow A Control Circuit Low
- P02E3Diesel Intake Air Flow A Control Circuit High
- P02E5Diesel Intake Air Flow A Control Stuck Closed
- P02E6Diesel Intake Air Flow A Position Sensor Circuit
- P02E7Diesel Intake Air Flow A Position Sensor Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.