P2740 Fault Code

Transmission Fluid Temperature Sensor B Circuit

• What does that mean?
• Symptoms
• Causes
• Solutions

The Transmission Fluid Temperature Sensor B Circuit monitors the temperature of the transmission fluid, which is crucial for the proper operation of the automatic transmission system. If the temperature deviates from normal operating conditions, it can lead to performance issues and potential damage to the transmission components.

What are the symptoms of the P2740 code?

When the P2740 code is set, you may experience the following symptoms:

• Transmission slipping or harsh shifting
• Overheating of the transmission
• Warning lights on the dashboard, such as the check engine light
• Poor acceleration or performance issues while driving

What causes the P2740 code?

A P2740 fault code can be triggered by several factors, including:

• A faulty transmission fluid temperature sensor B
• Wiring issues such as shorts or breaks in the sensor circuit
• Poor electrical connections, which can lead to incorrect readings
• Transmission fluid contamination or low fluid levels that affect temperature readings

How to fix P2740?

To resolve the P2740 fault code, you should:

• Inspect the transmission fluid level and condition; replace or top off as necessary
• Check the wiring and connectors for the transmission fluid temperature sensor B for any damage or corrosion
• Replace the faulty transmission fluid temperature sensor if it is determined to be defective
• Clear the fault codes and conduct a road test to ensure the issue is resolved