Which block to VAG to see which one of the O2 sensors needs to be replaced?
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when I was VaG'ing the car's readiness codes..
the O2 sensor showed that it failed..
so, which block do I read to see if its the pre or post cat O2 i need to replace..?
Thx
the O2 sensor showed that it failed..
so, which block do I read to see if its the pre or post cat O2 i need to replace..?
Thx
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