Honda B1075: Headlight Switch Back-up Circuit Malfunction

Is your scanner showing Honda B1075?
No worries. We'll show you what it means and how to deal with it.

Presented by

Randy Worner

00:00/00:00

Honda B1075: Headlight Switch Back-up Circuit Malfunction

OVERVIEW

Severity

Medium

DIY Difficulty Level

Intermediate

Repair Cost

$100-$150

Can I Still Drive?

Yes (Short-term only)

What Does The Honda B1075 Code Mean?

Poor communication between the Combination Switch Control Unit and the Relay Control Module or between the Combination Switch Control Unit and the MICU.

What Are The Potential Causes Of The Honda B1075 Code?

Short in the WHT wire between the Combination Switch Control Unit and the Relay Control Module (H/L BACK-UP line) or between the Combination Switch Control Unit and the MICU
Open GND circuit
Blown fuse in the main under-hood fuse box
Blown fuse in the under-dash fuse/relay box
“Open” or “Short” to ground at the Relay Control Unit
“Open” or “Short” to ground at the Combination Control Unit.
Faulty Relay Control Unit
Faulty Combination Control Unit