P02EC: Diesel Intake Air Flow A Control System - High Air Flow Detected
Standardized SAE J2012 code · P02xx — Fuel & air metering (injector circuit)
What does P02EC mean?
Ford's 6.7 and 3.0 diesels control the air mass through the EGR valve and the intake throttle. P02EC means the measured air mass stays above target with the control at its limit – too little EGR, or the throttle cannot restrict enough – for 10 s (6.7) or 5 s (3.0). Typical causes are a stuck-closed EGR valve or clogged EGR cooler, a throttle stuck open or a mass airflow sensor reading too high. NOx rises; driving is usually unaffected. Other manufacturers using this code were not found.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Higher NOx
- Often no change in driving
Common causes
- High EGR valve stuck closed or EGR cooler clogged
- Medium Intake throttle stuck open (P02E4)
- Medium Mass airflow sensor reading too high
- Low Boost too high
Likelihood is a general estimate across vehicles; your make and model may differ.
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