OBD-II code · Powertrain (generic, extended)
P2BB1 Alternative Fuel Consumption Too High
The AFCM detects that alternative fuel consumption exceeds the expected value for the active operating mode. Indicates injector leakage, fuel pressure too high, or unmetered fuel loss.
Is it safe to drive with P2BB1?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyAlt fuel injector leaking
- PossibleFuel rail pressure above target
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–7 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Alt Fuel Injectors, Alt Fuel Rail, Alt Fuel Pressure Regulator
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.