Monitor Description

This DTC is stored if an open or short in the EGR valve assembly circuit is detected.

Example:

• If the EGR1, EGR2, EGR3 or EGR4 terminal output voltage is excessively low, but the step motor is still operating, the ECM assembly determines that there is a short in the EGR valve assembly circuit, and stores this DTC.
• If the EGR1, EGR2, EGR3 or EGR4 terminal output voltage is excessively low, and the step motor is not operating, the ECM assembly determines that there is an open in the EGR valve assembly circuit, and stores this DTC.