OBD Guide
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B2046

Right Rear Stop Lamp Circuit Short To Ground

B2046 is an OBD-II diagnostic trouble code meaning: Right Rear Stop Lamp Circuit Short To Ground. Common causes: damage to the wires in the brake light circuit, lamp failure. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Right rear brake light does not work
  • Flashing or unstable brake light
  • A warning light comes on in the instrument panel

Causes

  • Damage to the wires in the brake light circuit
  • Lamp failure
  • Corrosion of connectors
  • Wiring harness damage
  • Problems with the control unit

How to Fix

  1. Check the right rear brake light bulb
  2. Inspect wires and connectors for damage
  3. Check the wiring harness for corrosion or damage.
  4. Replace faulty components
  5. Reset the error and check the operation of the brake light

Related codes

B2045B2047

FAQ

What does the B2046 code mean?

B2046 is an OBD-II diagnostic trouble code that indicates: Right Rear Stop Lamp Circuit Short To Ground

What causes a B2046 error code?

The most common causes of B2046 include: Damage to the wires in the brake light circuit; Lamp failure; Corrosion of connectors; Wiring harness damage.

How do I fix a B2046 diagnostic trouble code?

To fix B2046: Check the right rear brake light bulb. Inspect wires and connectors for damage. Check the wiring harness for corrosion or damage.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2046?

Limited driving only, diagnose soon

How much does it cost to fix B2046?

The estimated repair cost for B2046 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat