Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

A leak in the reductant system can be located by inspecting for a build-up of crystallized diesel exhaust fluid (Reductant).
Using the Reductant Injector Device Control, a ticking sound should be heard at the reductant injector.
The reductant injector may temporarily stick after the engine is off for a short period and cause DTC P20EE or P2BAA to set. The reductant injector may unstick after exposure to elevated exhaust temperatures after the engine is restarted.