Powertrain
generic / SAE
P27E9
Transmission Range Control B Circuit Low
The B-channel actuator of the transmission range control reports a circuit low condition. Gear-selector mechanical engagement cannot be requested as expected.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / E9
Possible causes
- Control wire shorted to ground high
- Internal short in actuator coil 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: hard
- DIY: shop recommended
- Estimated cost: 300–1800 €
- Estimated time: 1.5–6 h
- Component: transmission range control actuator b
- Component: wiring harness
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012