Lost Communication With EGR Sensor D

Where it lives

For U0669, the description names the sensor as the part involved.

Check these first

• The bus cannot reach EGR sensor D
• A carbon fouled EGR sensor D passage
• A broken wire in the EGR sensor D circuit
• A loose connector at the EGR valve
• A failed EGR position sensor D element

What to do next

1. Read EGR sensor D position on a scan tool
2. Remove and clean carbon from the EGR valve
3. Inspect the EGR sensor D connector and wiring
4. Check the sensor signal and ground circuits
5. Replace the EGR sensor D if the signal stays lost
6. Clear the code and retest

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