Powertrain
generic / SAE
P2740
Transmission Fluid Temperature Sensor B Circuit
The second transmission fluid temperature sensor returns no usable signal.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / 40
Possible causes
- Open sensor element or broken sensor wire high
- Corroded sensor connector 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: medium
- DIY: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 0.8–3 h
- Component: trans fluid temp sensor b
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012