U140A RAM Code - Implausible Right Front Wheel Speed Signal Received
Quick Answer
The U140A diagnostic trouble code (DTC) indicates that an implausible signal has been received from the right front wheel speed sensor. Common causes include Faulty right front wheel speed sensor, Damaged or corroded wiring/connectors leading to the sensor, Electronic control module (ECM) or ABS module malfunction. 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
- U140A RAM indicates Implausible Right Front Wheel Speed Signal Received.
- Common causes
- Common causes include Faulty right front wheel speed sensor, Damaged or corroded wiring/connectors leading to the sensor, Electronic control module (ECM) or ABS module malfunction.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code U140A RAM Description
The U140A diagnostic trouble code (DTC) indicates that an implausible signal has been received from the right front wheel speed sensor. This sensor is responsible for monitoring the speed of the right front wheel and sending this information to the vehicle's electronic control module (ECM) or anti-lock brake system (ABS) module. An implausible signal could mean that the sensor is providing erratic or incorrect data, which can lead to issues with the vehicle's stability control, traction control, and ABS systems.
Common Causes of U140A RAM
- Faulty right front wheel speed sensor
- Damaged or corroded wiring/connectors leading to the sensor
- Electronic control module (ECM) or ABS module malfunction
- Wheel bearing issues affecting the sensor's readings
- Incorrect tire size or tire pressure affecting wheel speed readings
Symptoms of U140A RAM
- ABS warning light illuminated on the dashboard
- Traction control system engaging erratically
- Loss of stability or control while driving, especially on slippery surfaces
- Decreased braking performance, especially during hard stops
- Vehicle may exhibit uneven braking or pulling to one side during braking
How to Fix U140A RAM
- Begin by visually inspecting the wiring and connectors leading to the right front wheel speed sensor for any damage or corrosion. Repair or replace as necessary.
- Test the right front wheel speed sensor using a multimeter to check for proper resistance and signal output. Replace the sensor if it fails the test.
- If the sensor is functioning correctly, check the ECM or ABS module for any fault codes or malfunctions. Reset or replace the module if necessary.
- Test drive the vehicle to ensure the issue has been resolved and that the ABS and stability control systems are functioning properly.
- Clear the DTC and perform a final scan to confirm that the U140A code has been successfully resolved.
Cost to Fix U140A RAM
The cost of repairing the U140A code can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of replacing a wheel speed sensor can range from $100 to $300, including parts and labor. If additional components like wiring or modules need to be replaced, the cost could increase. It is recommended to consult with a professional mechanic or auto repair shop to get an accurate estimate for your specific vehicle. Keep in mind that labor rates can vary between different shops and locations.
Need more information about the U140A RAM code?
Need more information on how to fix the U140A RAM code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U140A RAM code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about U140A RAM Code
1. What does the OBDII code U140A on a RAM vehicle mean?
The U140A code indicates that the vehicle’s computer has received an implausible or invalid signal from the right front wheel speed sensor.
2. What are the common symptoms of the U140A code?
Common symptoms include the ABS or traction control light turning on, reduced traction control performance, or erratic speedometer readings.
3. What causes the U140A code to appear?
The code is usually caused by a faulty right front wheel speed sensor, damaged wiring or connectors, or issues with the ABS module.
4. Can I still drive my RAM vehicle with the U140A code active?
While the vehicle may still be drivable, the ABS and traction control systems may not function properly, which could impact safety in certain driving conditions.
5. How do I fix the U140A code on my RAM?
Start by inspecting the right front wheel speed sensor and its wiring for damage. Replace the sensor if necessary, and repair any broken or corroded connections.
6. How can I diagnose the U140A code?
Use an OBDII scanner to confirm the code, then visually inspect the wheel speed sensor and wiring. A multimeter can be used to test the sensor’s resistance and signal output.
7. How much does it cost to repair the U140A code?
Repair costs can vary but typically range from $100 to $300, depending on whether the wheel speed sensor or wiring needs replacement.
8. Can the U140A code be caused by a dirty wheel speed sensor?
Yes, dirt or debris on the sensor can interfere with its signal. Cleaning the sensor may resolve the issue in some cases.
9. Will clearing the U140A code with a scanner fix the problem?
Clearing the code will only temporarily remove it. The underlying issue must be fixed to prevent the code from returning.
10. Does the U140A code affect other systems in the vehicle?
Yes, it can affect systems that rely on wheel speed data, such as ABS, traction control, and stability control, potentially compromising their functionality.
Discuss the causes and fixes for U140A RAM OBDII Code
Code U140A RAM comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.