AutoCodes – Ford – U0237 Ford

U0237 Ford Code - Lost Communication With Digital Audio Control Module 'C'

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 'C', Digital Audio Control Module 'C' harness is open or shorted, Digital Audio Control Module 'C' 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: U0237 Ford indicates Lost Communication With Digital Audio Control Module 'C'.
Common causes: Common causes include Faulty Digital Audio Control Module 'C', Digital Audio Control Module 'C' harness is open or shorted, Digital Audio Control Module 'C' 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 757

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 U0237 Ford 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 'C' has not been received.

OBDII Code U0237 Ford - Lost Communication With Digital Audio Control Module 'C' - AutoCodes.com — U0237 Ford Code - Lost Communication With Digital Audio Control Module 'C'

What does this mean?

What are the Possible Causes of the DTC U0237 Ford?

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

How to Fix the DTC U0237 Ford?

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 U0237 Ford 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 U0237 Ford Code

1. What are the common symptoms of OBDII code U0237 in a Ford vehicle?

- Common symptoms include loss of audio system functionality, no sound from speakers, and issues with radio operation.

2. What can cause the OBDII code U0237 to appear in a Ford vehicle?

- The code U0237 typically appears when there is a communication failure between the vehicle's control module and the digital audio control module 'C'.

3. How can I diagnose the cause of the U0237 code in my Ford vehicle?

- Diagnosing the U0237 code involves checking the wiring connections between the control modules, verifying power and ground connections, and potentially testing the digital audio control module 'C' for faults.

4. Is it safe to continue driving my Ford vehicle with the U0237 code present?

- It is generally safe to drive the vehicle with the U0237 code, but it is recommended to address the issue promptly to avoid any potential electrical system malfunctions.

5. Can I repair the U0237 code in my Ford vehicle on my own?

- Depending on your level of automotive expertise, you may be able to repair the U0237 code by checking and repairing any faulty wiring connections or replacing the digital audio control module 'C'.

6. What are some common repair tips for fixing the U0237 code in a Ford vehicle?

- Some common repair tips include checking for loose or corroded wiring connections, ensuring proper power supply to the digital audio control module 'C', and performing a module reset if necessary.

7. Does the U0237 code affect the overall drivability of the Ford vehicle?

- The U0237 code is related to the digital audio control module and does not directly affect the drivability of the vehicle. However, it can impact the audio system's functionality.

8. How much does it typically cost to repair the U0237 code in a Ford vehicle?

- The cost of repairing the U0237 code can vary depending on the underlying issue, but it may involve expenses for parts replacement, labor, and diagnostic testing.

9. Can a faulty digital audio control module 'C' cause other issues in a Ford vehicle?

- While the primary symptom of a faulty digital audio control module 'C' is related to the audio system, it can potentially affect other vehicle systems that rely on communication with the module.

10. Are there any recalls or service bulletins related to the U0237 code in Ford vehicles?

- It is recommended to check with Ford dealership service centers or online databases for any relevant recalls or service bulletins related to the U0237 code in your specific Ford vehicle model.