U069FLost Communication With Exhaust Pressure Sensor C
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Exhaust pressure sensor C is a third pressure measuring point in the exhaust; where it sits is up to the manufacturer, for example behind the turbine or on a second exhaust branch. U069F: this digital sensor, typically a SENT device, no longer supplies usable frames. No manufacturer documents U069F publicly. The nearest documented case is sensor A on Ford's 2023 diesels (6.7 L, 3.0 L): Ford stores U0691 for a transmission error or data gap, a signal wire pinned at one level, or a self-reported sensor fault, watched continuously over 5 s. Letters differ between makers, so these limits are not transferable. CARB requires a coded digital input that falls silent to have a code of its own. Wired analog versions of sensor C report P2E54 to P2E57. Expect the MIL and substitute values for boost or EGR control.
- What you may notice
- Check engine light
- Possibly less boost or power
- Pressure value missing or frozen in live data
- Likely causes
- LikelySignal, supply or ground wire of sensor C damaged by exhaust heat
- PossibleSensor C reports an internal fault or stops sending
- RareMoisture or corrosion in the sensor connector
- 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.