OBD Guide
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B2846

Driver Blind Spot Warning Light Control Circuit Low

B2846 is an OBD-II diagnostic trouble code meaning: Driver Blind Spot Warning Light Control Circuit Low. Common causes: open or short circuit in wiring harness, warning indicator malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Driver's Blind Spot Warning Indicator Not Working
  • False alarms of the system
  • Error message on the dashboard

Causes

  • Open or short circuit in wiring harness
  • Warning indicator malfunction
  • Problems with the blind spot system control unit
  • Poor contact in connectors

How to Fix

  1. Check wiring harness for damage
  2. Check that the warning indicator is working properly
  3. Check connectors and contacts for oxidation or damage
  4. Test the blind spot system control unit
  5. Replace faulty components

Related codes

B2845B2847U0121

FAQ

What does the B2846 code mean?

B2846 is an OBD-II diagnostic trouble code that indicates: Driver Blind Spot Warning Light Control Circuit Low

What causes a B2846 error code?

The most common causes of B2846 include: Open or short circuit in wiring harness; Warning indicator malfunction; Problems with the blind spot system control unit; Poor contact in connectors.

How do I fix a B2846 diagnostic trouble code?

To fix B2846: Check wiring harness for damage. Check that the warning indicator is working properly. Check connectors and contacts for oxidation or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2846?

Do not drive — repair immediately

How much does it cost to fix B2846?

The estimated repair cost for B2846 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat