Powertrain
generic / SAE
P2492
EGR Cooler Bypass Position Sensor Circuit Bank 1
A general circuit fault on the position feedback sensor of the EGR cooler bypass valve on bank 1. EGR mixes inert exhaust into intake to lower combustion peak temperature — too little raises NOx, too much causes misfires and rough running.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 92
Possible causes
- Open in sensor or wiring high
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
- Estimated cost: 150–500 €
- Estimated time: 0.8–2 h
- Component: egr cooler bypass position sensor b1
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012