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Engine-Codes – RAM – U148C RAM

U148C RAM Code - Implausible Data Received From Stop/Start Button

Quick Answer

The U148C diagnostic trouble code (DTC) indicates that the vehicle's onboard computer has detected implausible data received from the stop/start button. Common causes include Faulty stop/start button, Wiring issues or loose connections, Communication error between the button and the vehicle's computer. 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
U148C RAM indicates Implausible Data Received From Stop/Start Button.
Common causes
Common causes include Faulty stop/start button, Wiring issues or loose connections, Communication error between the button and the vehicle's computer.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code U148C RAM Description

The U148C diagnostic trouble code (DTC) indicates that the vehicle's onboard computer has detected implausible data received from the stop/start button. In modern vehicles equipped with stop/start technology, the system is designed to automatically shut off the engine when the vehicle comes to a stop, such as at a traffic light, and restart it when the driver releases the brake pedal. The stop/start button is a crucial component of this system, as it allows the driver to manually control the engine start/stop function.

OBDII Code U148C RAM - Implausible Data Received From Stop/Start Button
U148C RAM Code - Implausible Data Received From Stop/Start Button

Common Causes of U148C RAM

  1. Faulty stop/start button.
  2. Wiring issues or loose connections.
  3. Communication error between the button and the vehicle's computer.
  4. Malfunctioning control module for the stop/start system.
  5. Software glitch in the vehicle's computer system.

Symptoms of U148C RAM

  1. Engine stalling or failing to restart when the stop/start button is pressed.
  2. Inconsistent operation of the stop/start system.
  3. Warning light illuminated on the dashboard.
  4. Decreased fuel efficiency.
  5. Engine hesitation or rough idling.

How to Fix U148C RAM

  1. Begin by performing a visual inspection of the stop/start button and surrounding wiring to check for any obvious signs of damage or loose connections.
  2. Use a diagnostic scanner to retrieve the specific details of the U148C code and pinpoint the exact source of the issue.
  3. Test the stop/start button for proper functionality and replace it if necessary.
  4. Inspect and repair any damaged wiring or connections in the system.
  5. Reset the vehicle's computer system to clear the DTC and ensure that the stop/start system is functioning correctly.

Cost to Fix U148C RAM

The cost of repairing the U148C code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $100 to $300 for parts and labor to address this problem. Keep in mind that additional diagnostic time may be needed to accurately diagnose the issue, so it's best to consult with a professional mechanic for a more precise estimate based on your vehicle's make and model. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may differ based on location and shop type.

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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 U148C RAM Code

1. What are the common symptoms of OBDII code U148C RAM related to Implausible Data Received From Stop/Start Button?

- Common symptoms include intermittent or permanent issues with the stop/start button functionality, as well as errors displayed on the vehicle's dashboard.

2. What are the possible causes of OBDII code U148C RAM?

- The code U148C RAM can be caused by a faulty stop/start button, wiring issues, software glitches in the vehicle's system, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code U148C RAM?

- Diagnosis typically involves inspecting the stop/start button for physical damage, checking the wiring for any loose connections or damage, and using a diagnostic scan tool to read the code and gather more information.

4. Can I still drive my vehicle with OBDII code U148C RAM?

- It is generally safe to drive the vehicle when this code is present, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent further problems.

5. How can I repair OBDII code U148C RAM related to Implausible Data Received From Stop/Start Button?

- Repair options may include replacing the stop/start button, repairing any damaged wiring, updating the vehicle's software, or resetting the control module.

6. Is OBDII code U148C RAM a serious issue?

- While this code may not directly affect the drivability of the vehicle, it should be addressed promptly to ensure that the stop/start system functions correctly and to prevent any potential related issues.

7. Can resetting the vehicle's computer clear OBDII code U148C RAM?

- Resetting the computer may temporarily clear the code, but it is important to diagnose and address the underlying issue to prevent the code from reappearing.

8. How much does it typically cost to repair OBDII code U148C RAM?

- The cost of repair can vary depending on the specific cause of the code and the required repairs. It is recommended to consult with a mechanic for an accurate estimate.

9. Are there any DIY fixes for OBDII code U148C RAM?

- DIY fixes for this code may include checking the stop/start button and wiring for visible damage, but more complex repairs may require professional assistance.

10. Will OBDII code U148C RAM cause my vehicle to fail an emissions test?

- The presence of this code itself may not cause the vehicle to fail an emissions test, but it is still important to address and resolve the issue to ensure the proper functioning of the vehicle's systems.

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