Powertrain
generic / SAE
P045B
EGR B Control Circuit Range/Performance
EGR valve B is electrically OK but does not respond as commanded — typically carbon buildup or sticking actuator.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 5B
Possible causes
- Carbon buildup 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: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 0.7–3 h
- Component: egr valve
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012