DTC B1247: B1247 — Panel Dim Switch Circuit Open: Causes, Symptoms & Fix

The B1247 OBD2 fault code relates to the Panel Dim Switch circuit. When the circuit open circuit, the affected system may not operate correctly. At AIscanAuto, we help drivers quickly identify OBD2 trouble codes, understand their root causes, and find the right fix.

B1247 — Panel Dim Switch Circuit Open: Causes, Symptoms & Fix

The B1247 OBD2 fault code relates to the Panel Dim Switch circuit. When the circuit open circuit, the affected system may not operate correctly.

At AIscanAuto, we help drivers quickly identify OBD2 trouble codes, understand their root causes, and find the right fix.

Symptoms

System not responding properly
Possible warning indicator
Intermittent operation

Common Causes

Component failure — internal damage
an open circuit is detected — indicates a break in the circuit path, resulting in no signal transmission
Wiring issues — damaged harness
Connector problems — corrosion

Step-by-Step Diagnosis

Scan with OBD2 tool — Confirm B1247.
Visual inspection — Check component and wiring.
Test component — Verify operation.
Check wiring — Test for shorts/opens.

Repair & Solutions

Replace component if faulty.
Repair wiring.
Clean connectors.

Related Codes

B1244 — Wiper Rear Motor Run Relay Circuit Failure
B1245 — Wiper Rear Motor Run Relay Circuit Short to Battery
B1246 — Dim Panel Potentiometer Switch Circuit Failure

External References

- OBD2Pros — Complete DTC Reference

About This Guide

This diagnostic article is an original guide created by AIscanAuto for educational and troubleshooting purposes. The technical information about OBD2 DTC codes is based on publicly available automotive diagnostic standards and industry best practices. External links provided in the "External References" section are for additional reading and context only — they do not imply endorsement or ownership of third-party content. All repair procedures should be performed by qualified technicians.