Powertrain
generic / SAE
P0727
Engine Speed Input Circuit No Signal
The transmission control module receives no engine speed signal. Required to coordinate shifts and torque converter lockup with engine state.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / 27
Possible causes
- Speed signal lost on data bus high
- Bus communication fault medium
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: ecm
- Component: canbus
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012