Powertrain
generic / SAE
P285F
Shift Fork B Actuator Circuit/Open
The control circuit for shift fork B actuator reports a actuator circuit/open condition. Fork engagement cannot be commanded reliably.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number8 / 5F
Possible causes
- Open in actuator control wire high
- Open actuator coil medium
- Pin pushed back out of connector body 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: hard
- DIY: shop recommended
- Estimated cost: 400–2000 €
- Estimated time: 2–8 h
- Component: shift fork actuator b
- Component: wiring harness
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012