P044B
EGR Sensor C Circuit Range/Performance
EGR Sensor C Circuit Range/Performance: the signal is implausible or outside the valid range. Without valid EGR feedback the ECU disables exhaust gas recirculation and may set further EGR codes.
Possible causes
- Sensor drift high
- Sensor element aged beyond calibration window low
- Sensor mounting loose - signal damping low
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Inspection / repair
- Difficulty: medium
- DIY: possible
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