AutoCodes – Infiniti – C1729 Infiniti

C1729 Infiniti Code - Vehicle Speed Signal

Quick Answer

The Body Control Module (BCM) monitors the Vehicle Speed Signal. Common causes include CAN communication, Faulty Body Control Module (BCM), Faulty Combination Meter. 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: C1729 Infiniti indicates Vehicle Speed Signal.
Common causes: Common causes include CAN communication, Faulty Body Control Module (BCM), Faulty Combination Meter.
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.

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Code Popularity 15,165

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1729 Infiniti Description

The Body Control Module (BCM) monitors the Vehicle Speed Signal. The BCM sets the OBDII code when the Vehicle Speed Signal is not to factory specifications.

OBDII Code C1729 Infiniti - Vehicle Speed Signal - AutoCodes.com — C1729 Infiniti Code - Vehicle Speed Signal

What does this mean?

What are the Possible Causes of the DTC C1729 Infiniti?

CAN communication
Faulty Body Control Module (BCM)
Faulty Combination Meter
BCM/Combination Meter harness is open or shorted
BCM/Combination Meter circuit poor electrical connection

How to Fix the DTC C1729 Infiniti?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1729 Infiniti code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1729 Infiniti code?

Need more information on how to fix the C1729 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1729 Infiniti code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about C1729 Infiniti Code

1. What are the common symptoms of OBDII code C1729 in an Infiniti related to the vehicle speed signal?

- Common symptoms include erratic speedometer readings, cruise control malfunctions, and issues with the transmission shifting smoothly.

2. What are the possible causes of OBDII code C1729 indicating a problem with the vehicle speed signal in an Infiniti?

- The code may be triggered by a faulty wheel speed sensor, damaged wiring or connectors, a malfunctioning ABS module, or issues with the vehicle's speedometer.

3. How can I diagnose the root cause of OBDII code C1729 in my Infiniti related to the vehicle speed signal?

- To diagnose the issue, you can use a diagnostic scanner to read the code, check the wheel speed sensor readings, inspect the wiring harness for damage, and test the ABS module functionality.

4. Can a malfunctioning vehicle speed signal affect the overall performance of my Infiniti?

- Yes, a faulty vehicle speed signal can impact various systems in your vehicle, including the transmission, ABS, traction control, and cruise control, leading to performance issues and safety concerns.

5. Is it safe to continue driving my Infiniti with OBDII code C1729 related to the vehicle speed signal?

- It is not recommended to drive your vehicle with this code as it can affect critical functions like speedometer accuracy and transmission operation, potentially compromising your safety on the road.

6. How can I repair OBDII code C1729 indicating a problem with the vehicle speed signal in my Infiniti?

- Depending on the root cause, you may need to replace a faulty wheel speed sensor, repair damaged wiring, reset the ABS module, or recalibrate the vehicle's speedometer to resolve the issue.

7. Can resetting the OBDII code C1729 in my Infiniti fix the problem with the vehicle speed signal?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code to trigger. Proper diagnosis and repair are necessary to address the problem effectively.

8. Are there any preventive maintenance tips to avoid OBDII code C1729 related to the vehicle speed signal in my Infiniti?

- Regularly inspecting and maintaining your vehicle's wheel speed sensors, wiring harness, and ABS system can help prevent issues leading to this OBDII code and ensure optimal performance.

9. How long does it typically take to repair OBDII code C1729 indicating a problem with the vehicle speed signal in an Infiniti?

- The repair time can vary based on the specific cause of the code, but it may take a few hours to a full day, depending on the complexity of the diagnosis and the repair process involved.

10. Is it necessary to visit a dealership or can I fix OBDII code C1729 related to the vehicle speed signal in my Infiniti myself?

- While some DIY enthusiasts may be able to address simpler causes like a loose connector, complex issues involving sensors or ABS modules may require professional diagnosis and repair at a dealership or reputable auto repair shop.