Engine-CodesGeneric – U1412

U1412 Code - Implausible Vehicle Speed Signal Received

Quick Answer

The U1412 diagnostic trouble code (DTC) indicates that an implausible vehicle speed signal has been received by the vehicle's control module. Common causes include Faulty wheel speed sensor, Wiring or connection issues, Malfunctioning ABS 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
U1412 indicates Implausible Vehicle Speed Signal Received.
Common causes
Common causes include Faulty wheel speed sensor, Wiring or connection issues, Malfunctioning ABS 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 Aug 30, 2024
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Code U1412 Description

The U1412 diagnostic trouble code (DTC) indicates that an implausible vehicle speed signal has been received by the vehicle's control module. This means that the speed data being transmitted by one of the sensors in the vehicle does not match the expected values, leading to a discrepancy in the vehicle's speed calculation. This can result in inaccurate readings being sent to various systems in the vehicle, affecting its performance and safety features.

OBDII Code U1412 - Implausible Vehicle Speed Signal Received
U1412 Code - Implausible Vehicle Speed Signal Received

Common Causes of U1412

  1. Faulty wheel speed sensor
  2. Wiring or connection issues
  3. Malfunctioning ABS module
  4. Issues with the vehicle's transmission control module
  5. Electronic control module (ECM) software glitches

Symptoms of U1412

  1. Inaccurate speedometer readings
  2. Cruise control not engaging or disengaging unexpectedly
  3. ABS warning light illuminated on the dashboard
  4. Traction control system malfunctioning
  5. Vehicle going into limp mode

How to Fix U1412

  1. Diagnose the specific cause of the issue by using a professional diagnostic scan tool to retrieve the fault codes and perform sensor testing.
  2. Inspect the wheel speed sensors, wiring, and connections for any damage or corrosion, and replace or repair as necessary.
  3. Check the ABS module and transmission control module for faults, and reprogram or replace if needed.
  4. Clear the fault codes and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, further troubleshooting may be required to identify any underlying issues with the ECM.

Cost to Fix U1412

The cost of repairing the U1412 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair cost for this type of problem can range from $100 to $500, including parts and labor. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

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Code U1412 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.

Frequently Asked Questions about U1412 Code

1. What are common symptoms of OBDII code U1412 (Implausible Vehicle Speed Signal Received)?

- Common symptoms include erratic speedometer readings, cruise control issues, and the vehicle going into limp mode.

2. What are the possible causes of OBDII code U1412?

- Possible causes include faulty wheel speed sensors, damaged wiring or connectors, issues with the ABS system, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose the OBDII code U1412?

- Diagnosing this code typically involves using a scan tool to check for any related codes, inspecting the wheel speed sensors and their wiring, and testing the ABS system components.

4. Can I still drive my vehicle with the U1412 code?

- It is not recommended to drive the vehicle with the U1412 code present, as it can affect the vehicle's speed readings and potentially lead to unsafe driving conditions.

5. How can I repair OBDII code U1412 myself?

- DIY repairs for U1412 may involve checking and repairing any damaged wiring or connectors, replacing faulty wheel speed sensors, or resetting the PCM after addressing the root cause.

6. Is it necessary to reset the OBDII code U1412 after making repairs?

- Yes, it is important to clear the code after making repairs to see if the issue has been resolved successfully and to prevent it from triggering the Check Engine Light again.

7. Will the Check Engine Light turn off on its own after fixing the U1412 code?

- In most cases, the Check Engine Light will turn off on its own after the underlying issue triggering the U1412 code has been successfully repaired and the code has been cleared.

8. Can extreme weather conditions cause the U1412 code to appear?

- Yes, extreme weather conditions such as heavy snow or ice can potentially affect the wheel speed sensors and trigger the U1412 code due to inaccurate speed readings.

9. How much does it typically cost to repair the U1412 code at a dealership or repair shop?

- The cost of repairing the U1412 code can vary depending on the root cause, but it may range from $100 to $500 or more, including parts and labor.

10. Can the U1412 code be a recurring issue even after it has been repaired once?

- If the root cause of the U1412 code is not fully addressed or if there are underlying issues with the vehicle's ABS system, it is possible for the code to recur. Regular maintenance and inspections can help prevent this.

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