U0692 code meaning
Lost Communication With Exhaust Pressure Sensor B
Network system Generic code U06xx codes Check engine light
What U0692 means
Exhaust pressure sensor B is a second pressure point in the exhaust, whose location the maker defines, for instance on the other bank or behind the turbine. U0692 means its digital output, usually SENT, has stopped delivering valid frames. Code-specific documentation from a manufacturer is not public. Ford's 2023 diesel summary has only one exhaust pressure sensor, the SENT unit ahead of the turbine with U0691, and GM's 2025 diesel tables list no B sensor. CARB names exhaust pressure sensor output among the values diesel OBD systems must report and requires a separate code when a digitally coded input stops communicating. Analog circuit faults of sensor B are P047A to P047E; sensor C has U069F. What the driver notices depends on what the reading is used for, ranging from nothing beyond the lamp to reduced power.
U0692 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0692
- Check engine light
- Possibly reduced power
Common causes of U0692
- Most likelyWiring to pressure sensor B damaged by exhaust heat
- PossibleSensor B electronics failed
- PossibleConnector corroded
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Exhaust pressure sensor bVehicle bus wiring
What each part of U0692 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 92 | The exact fault in that area. |
What to do next
- Note U0692 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 U0692
What does U0692 mean?
U0692 means "Lost Communication With Exhaust Pressure Sensor B". Exhaust pressure sensor B is a second pressure point in the exhaust, whose location the maker defines, for instance on the other bank or behind the turbine. It is a generic code, so it means the same on every make.
Is it safe to drive with U0692?
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 U0692 fail an emissions test?
Yes, it can. U0692 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 U0692 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will U0692 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.