Powertrain
generic / SAE
P245A
EGR Cooler Bypass Control Circuit Open Bank 1
The EGR cooler bypass valve on bank 1 - routes EGR around the cooler during cold-start to keep cabin and engine warm-up fast - has an open control circuit.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 5A
Possible causes
- Open in valve or wiring high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor 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
- Estimated cost: 200–800 €
- Estimated time: 1–3 h
- Component: egr cooler bypass valve b1
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012