Powertrain, generic · Fuel and air metering (injector circuit)
P02ED Diesel Intake Air Flow A Control System - Low Air Flow Detected
Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible
Ford's 6.7 and 3.0 diesels control the air mass through the EGR valve and the intake throttle. P02ED means the measured air mass stays below target with the control at its limit – too much EGR, a throttle stuck closed or a clogged intake – for 10 s (6.7) or 5 s (3.0). Typical causes are an EGR valve stuck open, a clogged air filter, a sooted throttle or a dirty mass airflow sensor. The engine lacks air: loss of power, smoke and high soot load. Other manufacturers using this code were not found.
Likely causes
EGR valve stuck open
Air filter or intake clogged
Intake throttle stuck closed or coked
Mass airflow sensor reading too low (dirty)
Underboost or turbo fault
Symptoms
- Check engine light on
- Lack of power
- Smoke, high soot load in the filter
Repair estimate
DifficultyHardWorkshop job
Parts and labour€50–1,500
Time0.5–5 h
Typical range across vehicles; the real cost depends on what the testing finds.
Parts involved
egr valvediesel intake throttle valveair filtermass air flow sensor
Related codes
References: law.cornell.edu, fordservicecontent.com, ms-motorservice.com.