OBD Guide
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B2548

Driver Side Junction Block ECU Communication Stop

B2548 is an OBD-II diagnostic trouble code meaning: Driver Side Junction Block ECU Communication Stop. Common causes: open or short circuit in wiring harness, malfunction of the control unit on the driver's side. Estimated repair cost: $56–167.

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

Symptoms

  • The airbag malfunction indicator is on
  • Some passive safety features do not work
  • Problems with electrical systems on the driver's side

Causes

  • Open or short circuit in wiring harness
  • Malfunction of the control unit on the driver's side
  • Poor contact in connectors
  • Power or grounding problems

How to Fix

  1. Check wiring harness for damage
  2. Check connectors and contacts on the driver's side
  3. Check the power supply and grounding of the control unit
  4. If necessary, replace the control unit

Related codes

B2547B2549B2550

FAQ

What does the B2548 code mean?

B2548 is an OBD-II diagnostic trouble code that indicates: Driver Side Junction Block ECU Communication Stop

What causes a B2548 error code?

The most common causes of B2548 include: Open or short circuit in wiring harness; Malfunction of the control unit on the driver's side; Poor contact in connectors; Power or grounding problems.

How do I fix a B2548 diagnostic trouble code?

To fix B2548: Check wiring harness for damage. Check connectors and contacts on the driver's side. Check the power supply and grounding of the control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2548?

Limited driving only, diagnose soon

How much does it cost to fix B2548?

The estimated repair cost for B2548 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat