P2746 Fault Code

Intermediate Shaft Speed Sensor B Circuit Range/Performance

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

The P2746 code indicates a performance issue or range problem with the Intermediate Shaft Speed Sensor B. This sensor plays a crucial role in monitoring the speed of the intermediate shaft in automatic transmissions. A malfunctioning sensor can lead to erratic transmission behavior, affecting the overall performance of the vehicle.

What are the symptoms of the P2746 code?

Symptoms that may accompany the P2746 code are:

• Illogical or erratic shifting patterns while driving
• Transmission slipping or hesitation during gear changes
• Poor acceleration performance or reduced power
• The Check Engine Light (CEL) illuminated on the dashboard
• Increased fuel consumption due to inefficient transmission operation.

What causes the P2746 code?

Common causes for the P2746 code include:

• Faulty intermediate shaft speed sensor B
• Damaged or frayed wiring and connectors related to the sensor
• Transmission fluid issues, such as low levels or contamination
• Software glitches in the vehicle's engine control module (ECM)
• Mechanical failures within the transmission itself.

How to fix P2746?

To resolve the P2746 code, follow these steps:

1. Inspect the Intermediate Shaft Speed Sensor B and its wiring for visible damage or wear.
2. Test the sensor for proper resistance and voltage as per the manufacturer's specifications.
3. If the sensor is faulty, replace it with a new one.
4. Check the transmission fluid level and condition; replace or top off as necessary.
5. If no hardware issues are found, consider reprogramming or updating the ECM/software.
6. Clear the trouble codes and test drive the vehicle to verify the fix.