AutoCodes – Lincoln – U0238 Lincoln

U0238 Lincoln Code - Lost Communication With Digital Audio Control Module 'D'

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 Digital Audio Control Module 'D', Digital Audio Control Module 'D' harness is open or shorted, Digital Audio Control Module 'D' 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: U0238 Lincoln indicates Lost Communication With Digital Audio Control Module 'D'.
Common causes: Common causes include Faulty Digital Audio Control Module 'D', Digital Audio Control Module 'D' harness is open or shorted, Digital Audio Control Module 'D' 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 1,449

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 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0238 Lincoln 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 Digital Audio Control Module 'D' has not been received.

OBDII Code U0238 Lincoln - Lost Communication With Digital Audio Control Module 'D' - AutoCodes.com — U0238 Lincoln Code - Lost Communication With Digital Audio Control Module 'D'

What does this mean?

What are the Possible Causes of the DTC U0238 Lincoln?

Faulty Digital Audio Control Module 'D'
Digital Audio Control Module 'D' harness is open or shorted
Digital Audio Control Module 'D' circuit poor electrical connection

How to Fix the DTC U0238 Lincoln?

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 U0238 Lincoln 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 U0238 Lincoln Code

1. What are the common symptoms of OBDII code U0238 in a Lincoln related to the Digital Audio Control Module 'D'?

- Common symptoms include loss of sound from the audio system, inability to control audio functions, and warning lights on the dashboard.

2. What are some possible causes for OBDII code U0238 in a Lincoln indicating Lost Communication With Digital Audio Control Module 'D'?

- Possible causes include faulty wiring connections, a malfunctioning audio control module, software issues, or a communication network problem.

3. How can I diagnose the OBDII code U0238 in a Lincoln related to the Digital Audio Control Module 'D'?

- Diagnosis typically involves checking for loose or damaged wiring, testing the audio control module, scanning for additional trouble codes, and verifying communication on the network.

4. What repairs are commonly needed to fix OBDII code U0238 in a Lincoln indicating Lost Communication With Digital Audio Control Module 'D'?

- Repairs may involve repairing or replacing damaged wiring, reprogramming the audio control module, updating software, or addressing network communication issues.

5. Can I drive my Lincoln with OBDII code U0238 present?

- It is generally safe to drive the vehicle with this code, but it is recommended to have the issue diagnosed and repaired as soon as possible to avoid further audio system malfunctions.

6. How much does it typically cost to repair OBDII code U0238 in a Lincoln related to the Digital Audio Control Module 'D'?

- The cost of repair can vary depending on the specific issue, but it may range from $100 to $500 for parts and labor.

7. Is it possible to reset OBDII code U0238 in a Lincoln without fixing the underlying issue?

- While you may be able to clear the code temporarily, it will likely return until the root cause is identified and resolved.

8. Are there any preventive maintenance tips to avoid OBDII code U0238 in a Lincoln?

- Keeping up with regular vehicle maintenance, such as checking wiring connections and software updates, can help prevent issues that lead to this code.

9. Can a DIY enthusiast fix OBDII code U0238 in a Lincoln at home?

- Depending on the skill level and tools available, some DIY enthusiasts may be able to diagnose and repair simpler causes of this code, such as checking wiring connections.

10. How long does it typically take to repair OBDII code U0238 in a Lincoln at a mechanic's shop?

- The repair time can vary based on the exact cause of the issue, but it may take anywhere from a couple of hours to a full day to diagnose and fix the problem.