Transmission Fluid Temperature Sensor B Circuit Low

Where it lives

For P2742, the sensor sits on the circuit this code reports. The description of P2742 reports a fault at the sensor.

Check these first

• A short to ground on the transmission fluid temperature sensor B signal wire
• A failed transmission fluid temperature sensor B
• A corroded transmission fluid temperature sensor B connector
• Water intrusion in the transmission fluid temperature sensor B connector

What to do next

1. Read transmission fluid temperature sensor B on a scan tool
2. Test the transmission fluid temperature sensor B signal wire for a short to ground
3. Measure transmission fluid temperature sensor B resistance
4. Check the transmission fluid temperature sensor B connector for water intrusion
5. Replace transmission fluid temperature sensor B if the circuit tests good
6. Clear the code and retest

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