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Forum: Boxster General Discussions 09-22-2015, 11:55 AM
Replies: 6
Views: 2,201
Posted By jb92563
I'm in the same situation, with the P420 code. ...

I'm in the same situation, with the P420 code.

I think the first test would be to swap O2 sensors between the 2 banks to verify that its just not failing O2 sensors.

If so then its a cheap fix....
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