OBD Guide
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B116B

Left Power Running Board Motor Short

B116B is an OBD-II diagnostic trouble code meaning: Left Power Running Board Motor Short. Common causes: short circuit in the electric motor of the footrest, damage to the running board wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The left folding step does not work
  • The footrest does not extend or retract
  • The running board fault indicator on the dashboard is flashing

Causes

  • Short circuit in the electric motor of the footrest
  • Damage to the running board wiring harness
  • Malfunction of the footrest control module
  • Corrosion of contacts or connectors

How to Fix

  1. Check the integrity of the running board wiring harness
  2. Measure the resistance of the footrest motor
  3. Check power and control signals at the footrest connector
  4. Replace faulty motor or wiring harness
  5. Reset the error and check the system operation

Related codes

B116AB116CB116D

FAQ

What does the B116B code mean?

B116B is an OBD-II diagnostic trouble code that indicates: Left Power Running Board Motor Short

What causes a B116B error code?

The most common causes of B116B include: Short circuit in the electric motor of the footrest; Damage to the running board wiring harness; Malfunction of the footrest control module; Corrosion of contacts or connectors.

How do I fix a B116B diagnostic trouble code?

To fix B116B: Check the integrity of the running board wiring harness. Measure the resistance of the footrest motor. Check power and control signals at the footrest connector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B116B?

Limited driving only, diagnose soon

How much does it cost to fix B116B?

The estimated repair cost for B116B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat