P2749 Fault Code

Intermediate Shaft Speed Sensor C Circuit

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

The P2749 fault code indicates an issue with the Intermediate Shaft Speed Sensor C Circuit. This sensor is essential for providing the engine control unit (ECU) with accurate information about the speed of the intermediate shaft, which is crucial for proper transmission function and overall vehicle performance.

What are the symptoms of the P2749 code?

Vehicles experiencing a P2749 fault code may display:

• Unusual shifting patterns, such as harsh shifts or delayed engagements
• Transmission slipping or loss of power to the wheels
• Activation of the check engine light or transmission warning light
• Reduced fuel efficiency or engine performance problems
• In some cases, there may be no noticeable symptoms apart from the fault code itself

What causes the P2749 code?

Problems leading to a P2749 code may include:

• Faulty intermediate shaft speed sensor C
• Damaged wiring or connectors related to the speed sensor
• Poor electrical connections due to corrosion or wear
• Issues within the transmission control module (TCM)
• Mechanical failure in the transmission affecting sensor operation

How to fix P2749?

To resolve the P2749 fault code, consider performing the following steps:

1. Inspect the wiring and connectors associated with the intermediate shaft speed sensor C for any signs of damage or corrosion.
2. Replace the intermediate shaft speed sensor C if it is found to be faulty or not functioning properly.
3. Check the transmission control module (TCM) for updates or faulty programming.
4. Clear the fault code and conduct a test drive to see if the problem persists.
5. If the issue continues, additional diagnostics may be necessary to assess the transmission itself for mechanical issues.