OBD-II code · Powertrain (generic, extended)
P2BFF Exhaust Flow Control Valve B Position Circuit High
The exhaust flow control valve B reports a position circuit high condition. Exhaust routing for back-pressure or noise control cannot be commanded reliably.
Is it safe to drive with P2BFF?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen position sensor
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Likely to fail
- Parts involved
- Exhaust Flow Control Valve B, Wiring Harness, Ecm
Related codes
- P2BF7Exhaust Flow Control Valve A Position Circuit High
- P2D1AExhaust Flow Control Valve C Position Circuit High
- P2BFCExhaust Flow Control Valve B Position Circuit
- P2BFDExhaust Flow Control Valve B Position Circuit Range/Performance
- P2BFEExhaust Flow Control Valve B Position Circuit Low
- P2C00Fuel Pressure Regulator C Performance
- P2C01Fuel Pressure Regulator D Performance
- P2C02Fuel Pressure Regulator D Control Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.