What does code P20E2 mean?

Q: What does code P20E2 mean?

Reductant Pressure Too High. P20E2 indicates that the powertrain control module has detected a reductant pressure that is higher than the commanded or expected value within the diesel exhaust fluid system. The computer monitors the reductant pressure sensor and compares it to the desired pressure for current dosing conditions, setting this code when the actual pressure exceeds the threshold for a calibrated time.

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P20E2

P20E2Reductant Pressure Too High

P20E2 indicates that the powertrain control module has detected a reductant pressure that is higher than the commanded or expected value within the diesel exhaust fluid system. The computer monitors the reductant pressure sensor and compares it to the desired pressure for current dosing conditions, setting this code when the actual pressure exceeds the threshold for a calibrated time.

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.