OBD Guide

B2508

Right Lamp Low Beam Circuit Short to Battery

B2508 is an OBD-II diagnostic trouble code meaning: Right Lamp Low Beam Circuit Short to Battery. Common causes: damage to the insulation of the headlight power wires, short circuit in the headlight unit. Estimated repair cost: $22–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • The right low beam headlight does not work
  • Headlight circuit fuse tripping
  • Dashboard warning for lighting fault

Causes

  • Damage to the insulation of the headlight power wires
  • Short circuit in the headlight unit
  • Malfunction of the relay or lighting control unit
  • Oxidation or damage to contacts in connectors

How to Fix

  1. Check the condition of the headlight fuse
  2. Visually inspect the wiring harness for damage.
  3. Check the headlight circuit for short circuit with a multimeter
  4. Check the contacts in the headlight connectors
  5. If necessary, replace damaged wires or the headlight itself

Related codes

FAQ

What does the B2508 code mean?

B2508 is an OBD-II diagnostic trouble code that indicates: Right Lamp Low Beam Circuit Short to Battery

What causes a B2508 error code?

The most common causes of B2508 include: Damage to the insulation of the headlight power wires; Short circuit in the headlight unit; Malfunction of the relay or lighting control unit; Oxidation or damage to contacts in connectors.

How do I fix a B2508 diagnostic trouble code?

To fix B2508: Check the condition of the headlight fuse. Visually inspect the wiring harness for damage.. Check the headlight circuit for short circuit with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2508?

Limited driving only, diagnose soon

How much does it cost to fix B2508?

The estimated repair cost for B2508 is $22–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat