U0602Lost Communication With Particulate Filter Pressure Sensor B
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- Pressure sensor B serves a second particulate filter or a second measuring point, for example on engines with one gasoline particulate filter per bank. The code means its digital SENT output has stopped delivering usable frames to the engine controller. Ford's 2024 gasoline OBD summary lists U0602 with P245E in the check for SENT-type filter pressure sensors A to D, running continuously and needing 5 s to register; analog versions of the same sensors use the circuit low/high codes instead. CARB 1968.2 requires lost communication on a coded digital input to get its own fault code, apart from circuit and range faults. U0601 refers to sensor A, U0696 and U0697 to C and D. Filter loading for that branch must then be estimated without measurement.
- What you may notice
- Check engine light on
- Particulate filter monitor for the affected branch incomplete
- Likely causes
- LikelyDamaged SENT, supply or ground wire to sensor B
- PossibleSensor B electronics failed
- RareLoose or corroded connector at sensor B
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.