OBD Guide
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B2503

Right Lamp Low Beam Circuit Failure

B2503 is an OBD-II diagnostic trouble code meaning: Right Lamp Low Beam Circuit Failure. Common causes: burnt out lamp, open or short circuit in wiring harness. Estimated repair cost: $6–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • The right low beam lamp does not work
  • Flashing of the right low beam lamp
  • Dashboard warning

Causes

  • Burnt out lamp
  • Open or short circuit in wiring harness
  • Faulty relay or fuse
  • Problems with the control unit

How to Fix

  1. Check the lamp condition
  2. Check fuse and relay
  3. Inspect the wiring harness for damage
  4. Check contacts in connectors
  5. If necessary, replace faulty components

Related codes

B2502B2504B2505

FAQ

What does the B2503 code mean?

B2503 is an OBD-II diagnostic trouble code that indicates: Right Lamp Low Beam Circuit Failure

What causes a B2503 error code?

The most common causes of B2503 include: Burnt out lamp; Open or short circuit in wiring harness; Faulty relay or fuse; Problems with the control unit.

How do I fix a B2503 diagnostic trouble code?

To fix B2503: Check the lamp condition. Check fuse and relay. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2503?

Limited driving only, diagnose soon

How much does it cost to fix B2503?

The estimated repair cost for B2503 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat