OBD Guide
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B237C

Data Communication Radio Input Circuit High

B237C is an OBD-II diagnostic trouble code meaning: Data Communication Radio Input Circuit High. Common causes: short circuit in wiring harness, radio module malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Multimedia system malfunction
  • Radio communication problems
  • Problems with Bluetooth or other wireless interfaces

Causes

  • Short circuit in wiring harness
  • Radio module malfunction
  • Damage to connectors or contacts
  • Problems with the control unit

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect connectors and contacts for damage
  3. Check the voltage in the radio input circuit
  4. Replace the radio module if necessary

Related codes

B237DB237EU0100

FAQ

What does the B237C code mean?

B237C is an OBD-II diagnostic trouble code that indicates: Data Communication Radio Input Circuit High

What causes a B237C error code?

The most common causes of B237C include: Short circuit in wiring harness; Radio module malfunction; Damage to connectors or contacts; Problems with the control unit.

How do I fix a B237C diagnostic trouble code?

To fix B237C: Check the integrity of the wiring harness. Inspect connectors and contacts for damage. Check the voltage in the radio input circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B237C?

Limited driving only, diagnose soon

How much does it cost to fix B237C?

The estimated repair cost for B237C is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat