U0602 code meaning
Lost Communication With Particulate Filter Pressure Sensor B
Network system Generic code U06xx codes Check engine light
What U0602 means
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.
U0602 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0602
- Check engine light on
- Particulate filter monitor for the affected branch incomplete
Common causes of U0602
- Most likelyDamaged SENT, supply or ground wire to sensor B
- PossibleSensor B electronics failed
- Less likelyLoose or corroded connector at sensor B
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
DPF pressure sensor bSensor wiring
What each part of U0602 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 02 | The exact fault in that area. |
What to do next
- Note U0602 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0602
What does U0602 mean?
U0602 means "Lost Communication With Particulate Filter Pressure Sensor B". Pressure sensor B serves a second particulate filter or a second measuring point, for example on engines with one gasoline particulate filter per bank. It is a generic code, so it means the same on every make.
Is it safe to drive with U0602?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will U0602 fail an emissions test?
Yes, it can. U0602 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is U0602 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will U0602 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.