OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P044B?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor drift
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Egr Valve
Related codes
- P044AEGR Sensor C Circuit
- P046CEGR Sensor A Circuit Range/Performance
- P046EEGR Sensor B Circuit Range/Performance
- P0448EVAP System Vent Control Circuit Shorted
- P0449Evaporative Emission System Vent Valve/Solenoid Circuit Malfunction
- P044CEGR Sensor C Circuit Low
- P044DEGR Sensor C Circuit High
- P044EEGR Sensor C Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.