EGR A Control Position Exceeded Learning Limit
EGR A Control Position Exceeded Learning Limit: the control module has detected this fault condition. Without valid EGR feedback the ECU disables exhaust gas recirculation and may set further EGR codes.
Affected components
- Egr valve a
- Egr position sensor a
Common causes
- High likelihood: Heavy carbon deposits on EGR A seat
- Medium likelihood: Actuator gearing worn
Possible symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.