OBD-II code · Powertrain (generic, extended)
P27E8 Transmission Range Control B Circuit Performance
The B-channel actuator of the transmission range control reports a circuit performance condition. Gear-selector mechanical engagement cannot be requested as expected.
Is it safe to drive with P27E8?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- PossibleActuator responds slower than expected
- PossibleHigh-resistance contact in connector
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
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Transmission Range Control Actuator B, Wiring Harness, Tcm
Related codes
- P07E9Transmission Range Control A Circuit Performance
- P27E5Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit Low
- P27E6Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit High
- P27E7Transmission Range Control B Circuit/Open
- P27E9Transmission Range Control B Circuit Low
- P27EATransmission Range Control B Circuit High
- P27EBTransmission Range Control A Position Sensor/Switch Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.