The running board module sees the left running board motor circuits shorted together
What it means
B116B. The running board module sees the left running board motor circuits shorted together. That running board may stop part way or not move..
Findings, check these first
- Faulty left power running board motor assembly
- Left running board motor harness open or shorted
- Poor electrical connection in the left motor circuit
- Faulty power running board module
Standard procedure
- Confirm the code and test the left running board motor circuit
- Inspect the left motor assembly and its connector
- Check the left running board harness for chafing or damage
- Verify power and ground at the running board module
- Replace the left motor or the module only after tests
- Clear the code and retest to confirm the left board moves full travel
Code lookup
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Sources and review
Review: qualified. Read the source limits below.
- B116B FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes - OBD2 Codes
live reference page (obd2-codes.co)
Supports: FORD and Ford-family meaning and likely causes for B116B
Fetched directly. B116B reads "Left Power Running Board Motor Short". obdii.pro carries no definition for this code, so there is no Ford-family corroboration.
Last updated 2026-10-10.
Report a correction for B116B. Include your vehicle, the issue and a source if you have one.