What does code P20F7 mean?

Q: What does code P20F7 mean?

Reductant Injection Valve Stuck Open (Bank 2 Unit 1). P20F7 indicates that the powertrain control module has detected a fault in the reductant injection valve for bank 2 unit 1, specifically that the valve is stuck open. The computer monitors the valve's electrical circuit and the resulting pressure or flow changes, and it sets this code when the valve remains open when commanded closed or fails to close properly.

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P20F7

P20F7Reductant Injection Valve Stuck Open (Bank 2 Unit 1)

P20F7 indicates that the powertrain control module has detected a fault in the reductant injection valve for bank 2 unit 1, specifically that the valve is stuck open. The computer monitors the valve's electrical circuit and the resulting pressure or flow changes, and it sets this code when the valve remains open when commanded closed or fails to close properly.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.