OBD-II code · Powertrain (generic, extended)
P28DC Clutch B Pressure Sensor Circuit/Open
The TCM cannot read a valid signal from the clutch B pressure sensor. Open wiring or sensor failure.
Is it safe to drive with P28DC?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyOpen in sensor signal wire
- PossiblePressure sensor failed
- Less likelyPin pushed back out of connector body
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Clutch Pressure Sensor B, Wiring Harness, Tcm
Related codes
- P28CDClutch A Pressure Sensor Circuit/Open
- P28D9Clutch B Motor Underspeed
- P28DAClutch B Motor Position Sensor Circuit/Open
- P28DBClutch B Motor Position Sensor Circuit Range/Performance
- P28DDClutch B Pressure Sensor Circuit Low
- P28DEClutch B Pressure Sensor Circuit High
- P28DFClutch B Pressure Sensor Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.