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Mend Peugeot 406 Warning Light Stays

peugeot 406 deisel,engine diagnostic warning light?

the warning light for engine diagnostics stays on! it dosent flash,it also says system ommissions faulty.its a 2ltr hdi deisel 2004

wuzi
November 2009
hi all,
i had the same problem with the engine warning light for about two days, then stopped. now i have the light for warming the glow plugs that is not coming on even when outside temperature is -5c. tested and the code was p1198 which have nothing to do with the emissions fault (engine warning light) or glow plugs warming up light. any ideas? thanks

sthebos
December 2010
I had that on my '97 406 1.9TD. My mate had power washed it & water was sitting in the big 'scart like' plug on the ECU (under a plastic cover on left side of engine compartment, as you look into it, above all the belts). I disconnected the plug, took out the ECU, blew out the water that he'd forced in, used GT85 water displacement spray & I have no more problems. I hope yours is as simple.

Mark, Grimsby UK
January 2010

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