Upstream reductant pressure sensor, short circuit to ground
Check for a short circuit to ground failure on the pins on the EEC control unit that is connected to the upstream reductant doser pressure sensor. For a detailed harness and pin description see the electrical component, under the check tab, in the diagnostic tool. For a general description about different methods for electrical failure checks, see the work shop manual subgroup 16-70.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
The EEC control unit is indicating a short circuit to ground fault on the pins connected to the upstream reductant doser pressure sensor.
A short circuit to ground fault on the pins connected to the upstream reductant doser pressure sensor.