Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool check active DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
OTHER DTCS
Are the P24EA or U12A4 present?

Yes
- Perform the P24EA or U12A4 diagnostic procedure before proceeding.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Go To 3
AMMONIA SENSOR
NOTE:
The Ammonia Sensor Module has two harness connectors. One connector is routed to the Ammonia Sensor Probe (in the exhaust). The other connector is routed back to the PCM and the PDC. The harness wiring to the Probe is NOT shown in the MINI Wiring Schematic above. Follow the instructions below using

wiring color only

for identification.
1. Replace the Ammonia Sensor.
2. Turn the ignition on.
3. With the scan tool, read DTCs.
  Is the DTC still active?
  
  Yes
  - Replace the Ammonia Sensor Module.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .