U140A Code - Implausible Right Front Wheel Speed Signal Received
Quick Answer
The Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) detects an implausible Right Front Wheel Speed signal over the Controller Area Network (CAN) bus from the Anti-Lock Brake (ABS) Module. Common causes include Faulty Right Front Wheel Speed Sensor, Right Front Wheel Speed Sensor harness is open or shorted, Right Front Wheel Speed Sensor circuit poor electrical connection. 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 indicates Implausible Right Front Wheel Speed Signal Received.
- Common causes
- Common causes include Faulty Right Front Wheel Speed Sensor, Right Front Wheel Speed Sensor harness is open or shorted, Right Front Wheel Speed Sensor circuit poor electrical connection.
- 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 U140A Description
What are the Possible Causes of the DTC U140A?
- Faulty Right Front Wheel Speed Sensor
- Right Front Wheel Speed Sensor harness is open or shorted
- Right Front Wheel Speed Sensor circuit poor electrical connection
- Faulty Anti-Lock Brake System (ABS) Module
How to Fix the DTC U140A?
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 U140A 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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Information for Specific Makes
- U140A Chrysler — Implausible Right Front Wheel Speed Signal Received
- U140A Dodge — Implausible Right Front Wheel Speed Signal Received
- U140A Jeep — Implausible Right Front Wheel Speed Signal Received
- U140A RAM — Implausible Right Front Wheel Speed Signal Received
Frequently Asked Questions about U140A Code
1. What are the common symptoms of OBDII code U140A?
- Common symptoms of code U140A include ABS or traction control warning lights illuminated on the dashboard, erratic speedometer readings, and potential loss of traction control functionality.
2. What can cause the OBDII code U140A to trigger?
- The code U140A is typically triggered by a malfunction in the right front wheel speed sensor or its circuitry, leading to an implausible signal being received by the vehicle's control module.
3. How can I diagnose the issue related to code U140A?
- To diagnose the issue, you can use a professional OBDII scanner to read the fault codes and perform a visual inspection of the right front wheel speed sensor and its wiring for any visible damage or corrosion.
4. Can a faulty ABS sensor cause code U140A?
- Yes, a faulty ABS sensor, particularly the right front wheel speed sensor, can trigger code U140A due to providing incorrect or implausible speed signals to the vehicle's control module.
5. What are some repair tips for resolving OBDII code U140A?
- Repair tips for resolving code U140A include checking and cleaning the wheel speed sensor connections, inspecting the sensor for damage, replacing the sensor if necessary, and clearing the fault codes to see if the issue recurs.
6. Is it safe to continue driving with OBDII code U140A triggered?
- It is not recommended to continue driving with code U140A triggered, as it can affect the proper functioning of the ABS and traction control systems, potentially compromising vehicle safety and stability.
7. Can a DIY enthusiast fix OBDII code U140A at home?
- Depending on your skill level and access to tools, a DIY enthusiast may be able to fix code U140A at home by following repair guides, but it is advisable to have the necessary knowledge and caution when working on ABS and sensor systems.
8. How much does it cost to repair OBDII code U140A at a mechanic?
- The cost of repairing code U140A at a mechanic can vary depending on the labor rates and parts required, but it may typically range from $100 to $300, excluding any additional diagnosis or parts replacement.
9. Will resetting the fault codes resolve OBDII code U140A permanently?
- Resetting the fault codes may temporarily remove the warning lights associated with code U140A, but if the underlying issue with the right front wheel speed sensor persists, the code is likely to reappear until the problem is properly addressed.
10. Is it necessary to recalibrate the ABS system after fixing code U140A?
- In most cases, recalibrating the ABS system is not necessary after fixing code U140A unless specifically advised by the manufacturer or if other related components have been replaced, in which case following the manufacturer's procedures is recommended.
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