Engine-CodesGeneric – P2749

P2749 Code - Intermediate Shaft Speed Sensor 'C' Circuit

Quick Answer

The P2749 code indicates a problem with the Intermediate Shaft Speed Sensor 'C' circuit in the vehicle. Common causes include Faulty Intermediate Shaft Speed Sensor, Damaged wiring or connectors in the sensor circuit, Issues with the transmission control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2749 indicates Intermediate Shaft Speed Sensor 'C' Circuit.
Common causes
Common causes include Faulty Intermediate Shaft Speed Sensor, Damaged wiring or connectors in the sensor circuit, Issues with the transmission control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P2749 Description

The P2749 code indicates a problem with the Intermediate Shaft Speed Sensor 'C' circuit in the vehicle. The Intermediate Shaft Speed Sensor is a crucial component in the transmission system that monitors the speed of the intermediate shaft. This information is used by the vehicle's computer to determine the appropriate shift points for optimal performance and fuel efficiency.

OBDII Code P2749 - Intermediate Shaft Speed Sensor 'C' Circuit
P2749 Code - Intermediate Shaft Speed Sensor 'C' Circuit

Common Causes of P2749

  1. Faulty Intermediate Shaft Speed Sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Issues with the transmission control module
  4. Electrical interference or shorts in the circuit
  5. Corrosion or contamination affecting sensor performance

Symptoms of P2749

  1. Harsh or delayed shifting
  2. Poor acceleration
  3. Transmission getting stuck in a single gear
  4. Decreased fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P2749

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific fault code (P2749) and any related codes.
  2. Inspect the wiring and connectors in the Intermediate Shaft Speed Sensor 'C' circuit for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the Intermediate Shaft Speed Sensor using a multimeter to ensure it is functioning correctly. Replace the sensor if it is found to be faulty.
  4. Clear the fault codes from the vehicle's computer using the diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to identify any underlying issues with the transmission control module or other related components.

Cost to Fix P2749

** The typical repair costs for addressing the P2749 code can vary depending on the specific cause of the issue and the vehicle's make and model. In general, the cost of replacing a faulty Intermediate Shaft Speed Sensor can range from $100 to $300, including parts and labor. Additional costs may apply if wiring or connectors need to be repaired or replaced. It is advisable to consult with a professional mechanic or auto repair shop for a more accurate estimate based on the specific circumstances. Keep in mind that labor rates can vary between different locations and types of repair facilities.

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Code P2749 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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