C1729 Nissan 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 Nissan 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.
Code C1729 Nissan Description
What are the Possible Causes of the DTC C1729 Nissan?
- 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 Nissan?
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 Nissan 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.
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Frequently Asked Questions about C1729 Nissan Code
1. What does the OBDII code C1729 on a Nissan indicate?
The C1729 code indicates a fault related to the vehicle speed signal, suggesting that the signal received by the control unit does not match the expected parameters.
2. What are common symptoms of code C1729 in Nissan vehicles?
Symptoms may include the ABS light turning on, inaccurate speedometer readings, the vehicle entering limp mode, or changes in the behavior of the transmission such as harsh shifting.
3. What can cause the C1729 code to appear in a Nissan?
Common causes include faulty wheel speed sensors, damaged wires or connectors associated with the speed sensor circuit, issues with the vehicle’s ECU, or problems with the ABS module.
4. How can I diagnose the issue when a C1729 code is triggered in my Nissan?
Diagnosis should start with reading the code using an OBDII scanner, followed by a visual inspection of the wheel speed sensors and wiring. Further testing might involve checking the sensor's output with a multimeter and inspecting the ABS module and ECU for faults.
5. What steps should be taken to fix the C1729 code in a Nissan?
Repair steps typically include replacing faulty wheel speed sensors, repairing or replacing damaged wiring, and if necessary, addressing any faults found within the ABS module or ECU.
6. Is it safe to drive a Nissan with the C1729 code active?
While it might be safe to drive for a short distance, driving with this code active can lead to safety issues due to malfunctioning ABS and possibly inaccurate speed readings, which could affect the vehicle's handling and braking.
7. Does the C1729 code impact the fuel efficiency of a Nissan?
Indirectly, yes. If the vehicle speed signal is faulty, it can affect the transmission's shift timing, potentially leading to less efficient driving patterns and increased fuel consumption.
8. What tools are required to diagnose and repair a C1729 code in a Nissan?
Tools needed include an OBDII scanner, a multimeter for electrical testing, and basic hand tools for accessing and replacing components.
9. Can a faulty ABS module trigger the C1729 code on a Nissan?
Yes, a malfunctioning ABS module can send incorrect signals or fail to properly communicate with the vehicle’s speed sensors, leading to the C1729 code.
10. How often does the C1729 code occur in Nissans, and are certain models more prone to this issue?
The occurrence of this code can vary based on the model and the condition of the vehicle. It is less about frequency and more about the maintenance and health of the vehicle’s sensor and ABS systems. Regular checks and maintenance can mitigate the risk of this code appearing.
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