AutoCodes – Generic – U0244

U0244 Code - Lost Communication With Running Board Control Module 'A'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Running Board Control Module 'A', Running Board Control Module 'A' harness is open or shorted, Running Board Control Module 'A' 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: U0244 indicates Lost Communication With Running Board Control Module 'A'.
Common causes: Common causes include Faulty Running Board Control Module 'A', Running Board Control Module 'A' harness is open or shorted, Running Board Control Module 'A' 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.

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Code Popularity 3,987

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0244 Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Running Board Control Module 'A' has not been received.

OBDII Code U0244 - Lost Communication With Running Board Control Module 'A' - AutoCodes.com — U0244 Code - Lost Communication With Running Board Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U0244?

Faulty Running Board Control Module 'A'
Running Board Control Module 'A' harness is open or shorted
Running Board Control Module 'A' circuit poor electrical connection

How to Fix the DTC U0244?

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 U0244 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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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 U0244 Code

1. What does the OBDII code U0244 mean?

U0244 indicates that the vehicle's main control modules have lost communication with the Running Board Control Module 'A'.

2. What are the common symptoms of code U0244?

Symptoms may include non-functioning power running boards, a warning light on the dashboard, or intermittent operation of the running boards.

3. What causes the U0244 code to appear?

This code can be triggered by a faulty Running Board Control Module, damaged wiring, poor electrical connections, or an issue with the CAN (Controller Area Network) bus communication.

4. Can I still drive my car with code U0244?

Yes, but the power running boards may not operate correctly, which could be inconvenient or unsafe when entering or exiting the vehicle.

5. How do I diagnose the U0244 code?

Start by inspecting the wiring and connectors to the Running Board Control Module, checking for damage or loose connections. Then, use a scan tool to verify communication on the CAN network.

6. How can I fix the U0244 code?

Repairs may involve reconnecting or replacing damaged wiring, fixing loose connectors, or replacing the Running Board Control Module if it is faulty.

7. Is it expensive to fix code U0244?

The repair cost depends on the issue. For example, fixing wiring or connections is usually less expensive than replacing the Running Board Control Module.

8. Can a weak battery cause the U0244 code?

Yes, a weak or failing battery can cause voltage drops that disrupt communication between control modules, potentially triggering this code.

9. Does a software update fix the U0244 code?

In some cases, a software update for the vehicleâ€™s control modules may resolve communication issues, but this depends on the manufacturer and model.

10. What tools do I need to troubleshoot the U0244 code?

Youâ€™ll need an OBDII scan tool capable of reading manufacturer-specific codes and a multimeter to test wiring and connections.