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Engine-Codes – Generic – B237C

B237C Code - Data Communication Radio Input Circuit High

Quick Answer

The B237C code refers to a Data Communication Radio Input Circuit High issue in the vehicle. Common causes include Faulty radio unit, Damaged wiring or connectors, Malfunctioning control module. 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
B237C indicates Data Communication Radio Input Circuit High.
Common causes
Common causes include Faulty radio unit, Damaged wiring or connectors, Malfunctioning control module.
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 08, 2024
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Code B237C Description

The B237C code refers to a Data Communication Radio Input Circuit High issue in the vehicle. This means that there is a problem with the communication link between the radio and the vehicle's onboard computer system. When this code is triggered, it can lead to issues with the radio functionality, including problems with volume control, station selection, and display. Additionally, it can affect other systems in the vehicle that rely on data communication, such as the navigation system, Bluetooth connectivity, and voice control features.

OBDII Code B237C - Data Communication Radio Input Circuit High
B237C Code - Data Communication Radio Input Circuit High

Common Causes of B237C

  1. Faulty radio unit
  2. Damaged wiring or connectors
  3. Malfunctioning control module
  4. Problem with the vehicle's computer system
  5. Water damage to the radio components

Symptoms of B237C

  1. Radio not responding to controls
  2. Loss of audio output from the radio
  3. Display screen showing errors or glitches
  4. Issues with Bluetooth connectivity
  5. Navigation system malfunctioning

How to Fix B237C

  1. Begin by performing a visual inspection of the wiring and connectors to check for any visible damage or corrosion.
  2. Use a multimeter to test the continuity of the wiring and ensure that there are no breaks or shorts.
  3. Check the radio unit for any signs of malfunction and consider replacing it if necessary.
  4. Inspect the control module and the vehicle's computer system for any faults and address them accordingly.
  5. Clear the diagnostic trouble codes from the vehicle's system and test the radio functionality to ensure that the issue has been resolved.

Cost to Fix B237C

The cost of repairing a Data Communication Radio Input Circuit High issue can vary depending on the specific cause of the problem. On average, the repair costs for this issue could range from $200 to $500, including parts and labor. However, the final cost may be higher if any components need to be replaced or if additional diagnostics are required. It is recommended to consult with a professional mechanic to get an accurate estimate based on the vehicle's make and model.

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Code B237C Information for Specific Makes

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 B237C Code

1. What does OBDII code B237C mean?

Code B237C indicates a "Data Communication Radio Input Circuit High" fault, meaning there’s an issue with the data communication line to the radio system, such as a high voltage or signal problem.

2. What are the common symptoms of code B237C?

Common symptoms include the radio not functioning, loss of sound output, intermittent audio issues, or the infotainment system failing to respond.

3. What causes OBDII code B237C to appear?

This code can be caused by damaged wiring or connectors in the radio input circuit, a faulty radio unit, or an issue with the vehicle’s communication network.

4. Can a discharged battery trigger code B237C?

Yes, a weak or discharged battery can cause communication-related faults, including B237C, due to insufficient power to the system.

5. How can I diagnose the B237C code?

Start by visually inspecting the wiring and connectors related to the radio system for damage or corrosion. Use a scan tool to check for related communication faults and test the voltage and continuity of the circuit.

6. Is it safe to drive with the B237C code?

Yes, it’s generally safe to drive with this code, but you may lose functionality in your radio or infotainment system.

7. How do I fix code B237C?

Repairs may involve replacing damaged wiring or connectors, resetting the system, or replacing the radio unit if it’s defective.

8. Can a software update fix the B237C code?

In some cases, a software update for the vehicle’s infotainment system can resolve communication issues like B237C.

9. How much does it cost to repair the B237C code?

Repair costs can vary depending on the cause, but simple wiring repairs may cost $50-$100, while replacing a radio unit can cost $300-$1,000 or more.

10. Can I clear the B237C code without repairs?

Clearing the code with a scan tool may temporarily remove it, but if the underlying issue isn’t fixed, the code will likely return.

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