U0237 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 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.
Code U0237 Description
What are the Possible Causes of the DTC U0237?
- 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?
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 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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Information for Specific Makes
- U0237 Buick — Lost Communication With Multimedia Player Interface Module
- U0237 Cadillac — Lost Communication With Multimedia Player Interface Module
- U0237 Chevrolet — Lost Communication With Multimedia Player Interface Module
- U0237 Ford — Lost Communication With Digital Audio Control Module 'C'
- U0237 GMC — Lost Communication With Multimedia Player Interface Module
- U0237 Lincoln — Lost Communication With Digital Audio Control Module 'C'
- U0237 Mercury — Lost Communication With Digital Audio Control Module 'C'
Frequently Asked Questions about U0237 Code
1. What does OBDII code U0237 mean?
U0237 indicates a loss of communication between the vehicle’s primary control modules and the Digital Audio Control Module 'C'.
2. What are the common symptoms of code U0237?
Symptoms may include no sound from the audio system, unresponsive audio controls, or a blank display on the infotainment system.
3. What causes OBDII code U0237 to appear?
Common causes include a faulty Digital Audio Control Module 'C', damaged wiring or connectors, or a malfunction in the CAN (Controller Area Network) communication system.
4. Can a weak battery cause code U0237?
Yes, a weak or failing battery can cause communication issues between modules, potentially triggering code U0237.
5. How is code U0237 diagnosed?
A technician will use a scan tool to check for other related codes, inspect wiring and connectors for damage, and test the Digital Audio Control Module and CAN network for faults.
6. Is code U0237 serious?
While it doesn’t pose a safety risk, it can affect the functionality of the vehicle’s audio and infotainment systems, which may be inconvenient.
7. Can I fix code U0237 myself?
If the issue is minor, such as a loose connector, you may be able to fix it. However, diagnosing and repairing communication faults often requires specialized tools and expertise.
8. How much does it cost to repair code U0237?
Repair costs vary depending on the cause, but diagnosing and fixing wiring or module issues can range from $100 to $1,000 or more.
9. Will resetting the ECU clear code U0237?
Resetting the ECU may temporarily clear the code, but if the underlying issue is not resolved, the code will likely return.
10. Can software updates fix code U0237?
In some cases, updating the software for the affected modules can resolve communication issues and clear the code.
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