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E46 m3 cat codes

rmcw1873
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8 years 10 months ago #9416 by rmcw1873

E46 m3 cat codes was created by rmcw1873

Hey guys,customer came in today with his bmw e46 m3 2003.He said he was driving along when the engine light came on,he didn't notice any difference in power but wanted it checked out . The verus showed fault codes 178 and 179 cat1 and cat2.He needed the car so he said he would leave it in 2 weeks time so I can have a better look and fix it.I contacted the local dealership to see if there are any software updates available but they say no (Not sure about that!)has anybody came across these faults or any tips on locating the issue?

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Andy.MacFadyen
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8 years 10 months ago #9417 by Andy.MacFadyen

Replied by Andy.MacFadyen on topic E46 m3 cat codes

See This Link

" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)

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Tyler
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8 years 10 months ago #9429 by Tyler

Replied by Tyler on topic E46 m3 cat codes

Andy.MacFadyen wrote: See This Link

Nice.

Aside from having the latest software, there's only a few other things to check before replacing the cats. Check for exhaust leaks, make sure the fuel trims aren't skewed, verify that the engine is burning coolant or oil, and that there's no misfire issues.

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