Nissan almera 2003model?

There's a few threads that mention Nissan fault codeP1230 I've linked one below it should give you enough clues to start looking ultimate it might be a case of working through you could start methodically checking some of the things mentioned you might have some luck if you can find enthusiast forums dedicated to the Nissan Almera here's one link I found

https://www.engineobd2codes.com/p1230_nissan-almera.html

Here's another link that might help

https://m.youtube.com/watch?v=tktKJWdLv10


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November 2022