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jenniferweiss1

Peugeot 406 Lighting Fault

My 2003 Peugeot 406 (gasoline engine) lighting is acting up. Mileage is at 212144 km. When I switch the lights on, an error is stored. I suspect it's a defective cable or plug connection. Has anyone encountered this before? Where should I start, and is there a common weak point in the wiring?

Summary of the thread

A 2003 Peugeot 406 owner experienced lighting issues, suspecting a defective cable or plug connection. The problem included flickering dashboard lights and stored errors when the lights were switched on. Suggestions included checking the fuse box and dimmer switch, but ultimately, a workshop visit revealed a faulty light switch with corroded connectors. Replacing the switch and cleaning the connections resolved the issue.

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4 comment(s)

mats_raven8

Faulty light switch, eh? Have you checked the fuse box? Sometimes a simple blown fuse can cause weird lighting issues. Are the dashboard lights affected, or is it just the headlights/taillights? Could be the dimmer switch as well. Have you looked at that?

jenniferweiss1 (community.author)

I did check the fuses, and they seem fine. Dashboard lights are affected too - they flicker occasionally. Regarding the dimmer switch, how would I go about testing it? Is there a specific pinout I should be looking for with a multimeter?

mats_raven8

If the dashboard lights are also flickering, that points towards the dimmer switch or a broader wiring issue. Testing the dimmer switch with a multimeter can be tricky without the proper documentation. Honestly, with all those symptoms, it might be best to get it checked out by a workshop. Could save you a lot of headache trying to diagnose it yourself.

jenniferweiss1 (community.author)

Thanks for the input. Ended up taking it to a workshop as suggested. Turns out it was indeed a faulty light switch with corroded connectors, like I suspected. New switch and cleaning up the connections set me back 95€. All sorted now.

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PEUGEOT

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406