Powertrain
generic / SAE
P00BB
Fuel Injector Insufficient Flow - Forced Limited Power
One or more injectors deliver less fuel than commanded — ECU has activated forced power reduction. A flow-deviating injector throws off cylinder balance — adjacent cylinders run leaner/richer to compensate, often masking the root cause until the trim limit is hit.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / BB
Possible causes
- Injector nozzle clogged or worn high
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2500 €
- Estimated time: 1.5–8 h
- Component: fuel injectors
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012