What does code P202E mean?

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P202E

P202EReductant Injection Valve Circuit Range/Performance (Bank 1 Unit 1)

P202E indicates that the powertrain control module has detected an out-of-range condition in the reductant injection valve circuit for bank 1 unit 1, which is the valve that meters diesel exhaust fluid into the exhaust stream. The computer monitors the circuit for expected voltage or current behavior and flags the code when the signal falls outside the programmed range or fails a performance check.

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.