Powertrain
generic / SAE
P27B6
Internal Control Module Transmission Speed Sensor Performance
The internal speed sensor processing logic in the transmission control module produces implausible results.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / B6
Possible causes
- Internal software logic fault high
- Aged input capture circuitry drifts medium
- Sensor element aged beyond calibration window 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: 200–1500 €
- Estimated time: 1–4 h
- Component: tcm
- Component: speed sensors
- MIL / check engine light
Sources
References
sae:J2012