Possible Causes
- Purpose of the DTC
- Functional post selective catalyst reduction soot sensor monitoring, component protection
- Electrical Cause
- Mechanical Cause
- Control Module Signal Name
- Circuit reference CAN_L_3
- Circuit reference CAN_3_H
- Circuit reference SCRMRLY (power feed to post selective catalyst reduction soot sensor)
- Monitor Description
- Monitoring of the dynamic meander temperature for plausibility
- Prioritized List of Possible Causes
- Post selective catalyst reduction soot sensor incorrectly installed
- Post selective catalyst reduction soot sensor module circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Post selective catalyst reduction soot sensor failure
- DPF outlet temperature sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance
- SCR catalyst blocked
- Exhaust system mechanical integrity