Powertrain
generic / SAE
P28DD
Clutch B Pressure Sensor Circuit Low
Voltage on the clutch B pressure sensor signal line is below the expected window. Wire shorted to ground or sensor short.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number8 / DD
Possible causes
- Signal wire shorted to ground high
- Internal sensor short medium
- Connector pins corroded - high contact resistance low
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
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–900 €
- Estimated time: 1–4 h
- Component: clutch pressure sensor b
- Component: wiring harness
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012