P2BF2Fuel Control System B Too Lean Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2BF2 combines two restrictions: the lean correction is on bank 2, and it only occurs in the port injection mode that Ford designates fuel system B. The Ford threshold is identical to the other trim codes of this family, more than 25 percent added by long-term trim plus over 1 percent by short-term trim for 2 seconds. Using both letters and both banks together helps the diagnosis. A lean result on bank 2 alone in PFI mode suggests a port injector or an intake leak on that side; lean on both banks in PFI mode (P2BF0 and P2BF2) points to the shared low-pressure supply; lean in every mode is P0174. On the 2019 to 2021 F-150 with the 5.0 L V8, bulletin 22-2393 treats this code with a PCM reflash and a keep-alive memory reset.
- What you may notice
- Check engine light on
- Uneven idle
- Mild hesitation at part throttle
- Likely causes
- PossiblePCM software, Ford reprogramming bulletins
- PossiblePort injector on bank 2 clogged
- PossibleAir leak at the bank 2 intake gasket or injector O-ring
- RareWeak low-pressure supply, usually with P2BF0 as well
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.