What are the common causes of U0697?

Particulate filter pressure sensor D not reporting on the bus. A broken or shorted wire in the sensor D circuit. Soot or corrosion in the sensor D connector. A clogged pressure port or failed element in sensor D. Loss of reference voltage or ground at sensor D.

Check reference voltage and ground at particulate filter pressure sensor D. Inspect the sensor D connector and pressure port for soot. Test the sensor D signal wire for opens and shorts. Read filter pressure live data and compare to sensor C. Replace particulate filter pressure sensor D if it stays offline. Clear the code and retest.

U0697

Lost Communication With Particulate Filter Pressure Sensor D

System: Network communication (U code)
Lamp: Check Engine Light
Category: Network Communications

What it means

U0697 means Lost Communication With Particulate Filter Pressure Sensor D.

Where it lives

For U0697, start at the sensor the description names.

Check these first

Particulate filter pressure sensor D not reporting on the bus
A broken or shorted wire in the sensor D circuit
Soot or corrosion in the sensor D connector
A clogged pressure port or failed element in sensor D
Loss of reference voltage or ground at sensor D

What to do next

Check reference voltage and ground at particulate filter pressure sensor D
Inspect the sensor D connector and pressure port for soot
Test the sensor D signal wire for opens and shorts
Read filter pressure live data and compare to sensor C
Replace particulate filter pressure sensor D if it stays offline
Clear the code and retest

Look up another code

Code or symptom

Enter a full code or a symptom. Press / to search. How to read a code

Type a code above, or start from a symptom or a common code.

Updated

Generic SAE J2012 definition. Last updated 2026-10-10.