P02EC
Diesel Intake Air Flow A Control System - High Air Flow Detected
Air flow through diesel intake throttle A is higher than the commanded set point — flap leaking past the seat or stuck partly open.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Throttle plate leaks past seatCommon
Parts involved
- Diesel Intake Throttle
- Mass Air Flow Sensor
P02EC is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.