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Home DTC Codes B0585 Medium · 30-60min
B0585 Warning

OBD2 code B0585: Lighting system

Lighting system fault.

ECU: BCM

Detected Root Component

Body Component

Confidence level: low

Observed Symptoms

  • Dashboard errors

Possible Causes

  • Faulty BCM module
  • Blown fuse
  • Damaged wiring
  • Corroded connector
Diagnostic Progress 0 %
Difficulty Medium
Est. time 30-60min
Tools Required 5 tool(s)

Tools Required

multimeter OBD scanner wiring diagram flashlight trim removal tool

Interactive Diagnostic

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Diagnostic Result

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certainty points

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Parts likely to be the cause (Boîtier fusibles / BSI)

Boîtier fusibles / BSI

Boîtier fusibles / BSI

Photo d'illustration : Boîtier fusibles / BSI

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Frequently asked questions about code B0585

What does code B0585 mean?

OBD2 code B0585: Lighting system. Lighting system fault.

What are the symptoms of code B0585?

Code B0585 may cause: Dashboard errors. The intensity of these symptoms varies depending on the vehicle and driving conditions.

What causes code B0585?

The most common causes of code B0585 are: Faulty BCM module, Blown fuse, Damaged wiring, Corroded connector. A proper OBD2 diagnostic will pinpoint the exact cause.

Is it serious to drive with code B0585?

Code B0585 has moderate severity (Warning). Short-term driving remains possible, but a prompt check is recommended to prevent worsening.

How do I fix code B0585?

Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Faulty BCM module, Blown fuse, Damaged wiring, Corroded connector. Difficulty: moderate · Estimated time: 30-60min.