U0697: Lost Communication With Particulate Filter Pressure Sensor D
Standardized SAE J2012 code · U06xx codes
What does U0697 mean?
The vehicle bus reports loss of communication with smart DPF differential pressure sensor D. The ECM cannot read soot loading via this channel and may switch to a model-based estimate.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Common causes
- High Bus wiring open or shorted
- Medium Module without power or ground
- Medium Module failed
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of U0697 on the same make and model first.
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