This diagnosis is typically EGR Delta P Sensor out of calibration.
39.4.1
EGR Delta P Sensor Check
Check as follows”
1. Disconnect the EGR Delta P Sensor.
2. Inspect the EGR Delta P Sensor connector for bent, spread or corroded pins.
[a] If pin damage is found, repair as necessary. Refer to section 39.4.1.1.
[b] If no pin damage is found, go to step 3.
3. Replace the EGR Delta P Sensor. When the sensor is replaced, connect DDDL 7.0 and
perform the EGR valve calibration service routine.
39.4.1.1
Verify Repairs
Verify repairs as follows:
1. Turn ignition OFF.
2. Reconnect any electrical connections that were disconnected to perform the diagnosis.
3. Clear codes with DDDL 7.0 or latest version.
4. Start and bring engine up to operating temperature (over 140°F/60°C).
5. Verify operation is satisfactory and no warning lamps illuminate. If warning lamps
illuminate, troubleshoot the codes. If assistance is required, call the Detroit Diesel
Customer Support Center at 313–592–5800.
