Fault Code P2742
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2742
Transmission Fluid Temperature Sensor 'B' Circuit Low
This code indicates an unexpectedly low voltage signal from the Transmission Fluid Temperature Sensor 'B'. Such a signal may suggest a short circuit or a faulty sensor.
Part Details
Part Name
Transmission Fluid Temperature Sensor 'B'
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪250 - ₪800
Engine Location
Transmission
Symptoms
- Erratic gear shifting
- Transmission overheating
- Limp-home mode activation
- Check Engine Light on
Possible Causes
- 1Short circuit in the sensor circuit
- 2Faulty temperature sensor
- 3Damaged or loose wiring
- 4Transmission Control Module (TCM) fault
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