U140B Jeep Code - Implausible Left Rear Wheel Speed Signal Received
Quick Answer
The Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) detects an implausible Left Rear Wheel Speed signal over the Controller Area Network (CAN) bus from the Anti-Lock Brake (ABS) Module. Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear 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
- U140B Jeep indicates Implausible Left Rear Wheel Speed Signal Received.
- Common causes
- Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear 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 U140B Jeep Description
What are the Possible Causes of the DTC U140B Jeep?
- Faulty Left Rear Wheel Speed Sensor
- Left Rear Wheel Speed Sensor harness is open or shorted
- Left Rear Wheel Speed Sensor circuit poor electrical connection
- Faulty Anti-Lock Brake System (ABS) Module
How to Fix the DTC U140B Jeep?
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 U140B Jeep 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 U140B Jeep Code
1. What are the common symptoms of the U140B OBDII code in a Jeep?
- Common symptoms include ABS or traction control warning lights on the dashboard, uneven braking, and potential stability control issues.
2. What does the U140B code "Implausible Left Rear Wheel Speed Signal Received" mean in a Jeep?
- This code indicates that the vehicle's onboard computer has detected an implausible signal coming from the left rear wheel speed sensor.
3. What are the possible causes of the U140B code in a Jeep?
- Possible causes include a faulty left rear wheel speed sensor, damaged wiring or connectors, sensor alignment issues, or problems with the ABS module.
4. How can I diagnose the U140B code in my Jeep?
- Diagnosing the U140B code typically involves inspecting the left rear wheel speed sensor, checking for damaged wiring or connectors, and using a diagnostic scanner to read the code and clear it.
5. Can I still drive my Jeep with the U140B code present?
- It is not recommended to drive the vehicle with the U140B code active, as it can affect the proper functioning of the ABS, traction control, and stability control systems.
6. How can I repair the U140B code in my Jeep?
- Repairing the U140B code may involve replacing the left rear wheel speed sensor, repairing damaged wiring or connectors, realigning the sensor, or addressing any issues with the ABS module.
7. Is the U140B code a serious issue in a Jeep?
- The U140B code should be addressed promptly to ensure the proper functioning of the vehicle's safety systems, such as ABS and traction control.
8. Can weather conditions affect the U140B code in a Jeep?
- Extreme weather conditions, such as heavy rain or snow, can potentially cause issues with the wheel speed sensors and trigger the U140B code in a Jeep.
9. How much does it cost to repair the U140B code in a Jeep?
- The cost of repairing the U140B code can vary depending on the specific cause of the issue, but it may involve sensor replacement, wiring repairs, or module reprogramming.
10. Can I reset the U140B code in my Jeep without fixing the underlying issue?
- While you can clear the code temporarily, it will likely reappear if the underlying issue causing the U140B code is not addressed. It is recommended to diagnose and repair the problem to prevent further issues.
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