Acura B1155: Gauge Control Module Lost Communication with Combination Switch Control Unit (HLSW Message)

Is your scanner showing Acura B1155?
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Presented by

Randy Worner

00:00/00:00

Acura B1155: Gauge Control Module Lost Communication with Combination Switch Control Unit (HLSW Message)

OVERVIEW

Severity

Medium

DIY Difficulty Level

Intermediate

Repair Cost

$75-$200

Can I Still Drive?

Yes (Short-term only)

What Does The Acura B1155 Code Mean?

This code indicates poor communication between the Gauge Control Module and the Combination Switch Control Unit, resulting from faulty or intermittent headlamps.

Note: If DTCs B1007, B1062, B1063, B1957, B1958, and/or B2969 are indicated, perform the Combination Switch Control Unit input test. If additional codes are not present perform the Gauge Control Module input test.

What Are The Potential Causes Of The Acura B1155 Code?

Below are some possible causes of this DTC:

Loose or poor connections between the Gauge Control Module and the Combination Switch Control Unit
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 Gauge Control Module
“Open” or “Short” to ground at the Combination Control Unit
Faulty Combination Control Unit
Faulty Gauge Control Module