Powertrain
generic / SAE
P23FD
Cylinder 12 Injector B Air-Fuel Ratio Imbalance
On dual-injector systems (typical for some heavy-duty diesels and some petrol/gas bi-fuel applications) the secondary injector B at cylinder 12 cannot keep its mixture in balance with the rest of the bank.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / FD
Possible causes
- Injector B for cylinder 12 has drifted in flow rate high
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1200 €
- Estimated time: 1–4 h
- Component: fuel injector b cyl 12
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012