U140B Dodge 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 Dodge 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 Dodge Description
What are the Possible Causes of the DTC U140B Dodge?
- 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 Dodge?
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 Dodge 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 Dodge Code
1. What are the common symptoms of the U140B OBDII code on a Dodge vehicle?
The common symptoms include ABS or traction control warning lights illuminated on the dashboard, erratic or inaccurate speedometer readings, and potential issues with the vehicle's stability control system.
2. What does the U140B code "Implausible Left Rear Wheel Speed Signal Received" mean?
This code indicates that the vehicle's onboard computer has detected a discrepancy or inconsistency in the speed signal coming from the left rear wheel speed sensor.
3. What are the possible causes of the U140B OBDII code in a Dodge vehicle?
Possible causes include a faulty left rear wheel speed sensor, damaged wiring or connectors leading to the sensor, issues with the ABS module, or a problem with the wheel hub bearing assembly.
4. How can I diagnose the U140B code on my Dodge vehicle?
Diagnosis typically involves using a diagnostic scanner to retrieve the specific codes stored in the vehicle's computer, inspecting the left rear wheel speed sensor and its wiring for damage, and testing the sensor's functionality using a multimeter.
5. Can I continue driving my Dodge 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, potentially compromising the vehicle's safety.
6. How can I repair the U140B OBDII code on my Dodge?
Repairing the U140B code may involve replacing the left rear wheel speed sensor, repairing or replacing damaged wiring or connectors, addressing any issues with the ABS module, or servicing the wheel hub bearing assembly as needed.
7. Is it possible to clear the U140B code without fixing the underlying issue?
While you can clear the code temporarily using a diagnostic scanner, the underlying issue causing the code to trigger will persist until properly addressed, and the code is likely to return.
8. Can a DIY enthusiast fix the U140B code issue on a Dodge?
Depending on the skill level and experience of the DIY enthusiast, it may be possible to address the U140B code by replacing the left rear wheel speed sensor or repairing damaged wiring. However, complex issues with the ABS module or wheel hub assembly may require professional assistance.
9. How much does it cost to repair the U140B code on a Dodge at a dealership or repair shop?
The cost of repairing the U140B code can vary depending on the specific cause of the issue, the labor rates of the dealership or repair shop, and the cost of any parts that need replacement. It is advisable to obtain a diagnosis and estimate from a qualified technician.
10. How can I prevent the U140B OBDII code from recurring in the future?
Regular maintenance of the vehicle's ABS and traction control systems, including inspecting and replacing wheel speed sensors as needed, can help prevent the recurrence of the U140B code.
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