Thread: P0320 codes
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Old July 21st 05, 02:00 AM
hosbadar
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Default P0320 codes

I have 96 chev truck 305 CI with 228,000 miles on it. trouble code comes up
with catalyist efficiency below threshold bank 1. It has 4 02 sensors and 1
catalytic converter. I clear the codes and it runs fine for a couple of
days up to a couple of weeks. Cant figure out if 02 sensors or converter
is bad.

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