OBD Guide
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B17B8

Left Stop Lamp Control Circuit Overcurrent

B17B8 is an OBD-II diagnostic trouble code meaning: Left Stop Lamp Control Circuit Overcurrent. Common causes: short circuit in wiring harness, faulty brake light bulb. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Left brake light does not work
  • Left brake light flashing
  • Dashboard warning
  • Disabling related security systems

Causes

  • Short circuit in wiring harness
  • Faulty brake light bulb
  • Connector damage
  • Control module malfunction
  • Contact corrosion

How to Fix

  1. Check the condition of the brake light lamp
  2. Inspect the wiring harness for damage
  3. Check connectors for corrosion
  4. Measure the circuit resistance
  5. If necessary, replace faulty components

Related codes

B17B7B17B9B1453

FAQ

What does the B17B8 code mean?

B17B8 is an OBD-II diagnostic trouble code that indicates: Left Stop Lamp Control Circuit Overcurrent

What causes a B17B8 error code?

The most common causes of B17B8 include: Short circuit in wiring harness; Faulty brake light bulb; Connector damage; Control module malfunction.

How do I fix a B17B8 diagnostic trouble code?

To fix B17B8: Check the condition of the brake light lamp. Inspect the wiring harness for damage. Check connectors for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B17B8?

Limited driving only, diagnose soon

How much does it cost to fix B17B8?

The estimated repair cost for B17B8 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat