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Mercedes ML 3.2 1998, Mercedes w124 250D 92'
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235 Posts
Discussion Starter #1
Does anybody know the possible causes for the Ignitions diagnostic code of the ME2 ignition system in a 3.2 Engine specified as P0300-080.
It says "Ignition vanishing, damages the catalyst"
 

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'00 ML 430
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235 Posts
This a "misfiring" code if I am not mistaken. I would check for air leaks in the intake and MAF malfunction. You need to read the MAF output with a proper scan tool to determine if it reads correctly.

What's happening is that wrong air/fuel mixture leads to misfiring. That causes unburned fuel reaching the catalytic converter and that can damage it.
 
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