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Can downstream O2 sensors somehow trigger upstream codes?
Just bought the car- Keep getting P2A00 and P2A03 codes....have kinetix velocity manifold,NWP throttle body kit, TP’s and invidia exhaust.
quick look under the car located suspect downstream O2 sensor wiring issue and wondered if there was any instance where it might somehow be the culprit to my codes( reaching here as it would be an easy fix😂
of course doesn’t help that it’s always both codes ( O2 circuit range/performance bank1 and bank 2
Can downstream O2 sensors somehow trigger upstream codes?
