What does code P20A7 mean?

Q: What does code P20A7 mean?

Reductant Injection Air Pressure Control Valve Performance. P20A7 indicates that the reductant injection air pressure control valve is not performing as expected within the diesel exhaust fluid (DEF) system. The engine control module monitors the valve's ability to regulate air pressure for injecting DEF into the exhaust, and it has detected a deviation from the commanded pressure or a circuit fault.

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P20A7

P20A7Reductant Injection Air Pressure Control Valve Performance

P20A7 indicates that the reductant injection air pressure control valve is not performing as expected within the diesel exhaust fluid (DEF) system. The engine control module monitors the valve's ability to regulate air pressure for injecting DEF into the exhaust, and it has detected a deviation from the commanded pressure or a circuit fault.

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.