Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- A slight to moderate resistance in either signal or low reference circuit can widen the spread between the two EGR temperature sensors and cause this DTC to set.
- An EGR temperature sensor that is skewed can widen the spread between the two sensors and cause this DTC to set. Measure and record the resistance of both EGR temperature sensors 1 and 2 at ambient air temperature. Compare those measurements to the Temperature Versus Resistance (EGT Sensors) , Temperature Versus Resistance (EGR Temperature Sensors) , Temperature Versus Resistance (Reductant Injector) , Temperature Versus Resistance (Reductant Tank Temperature Sensor) and Temperature Versus Resistance (Engine Coolant Temperature Sensor) .
- Carefully inspect all EGR temperature sensor terminals for corrosion and poor connections.