Circuit/System Verification

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

Ignition On.
Verify DTC UXXXX is not set.
- If a DTC is set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If no DTC is set
Verify the following conditions do not exist:
- Induction system leaks - Refer to Induction System Smoke Test in Charge Air Cooler Diagnosis (Induction System Air Leak Test) , Charge Air Cooler Diagnosis (Induction System Smoke Test) and Charge Air Cooler Diagnosis .
- Exhaust system leaks - Refer to Exhaust Leakage
- Physical damage.
- Soot plugged B195 NOx Sensor.
- Loose or missing hardware.
- Loose B195 NOx.
- If a condition is found
  Repair the intake or exhaust system.
- If no condition is found
  Replace the B195 NOx Sensor - Position 2.