02 sensor on 99-04 mustang

Asked by Jun 12, 2016 at 03:00 PM about the 2001 Ford Mustang Coupe

Question type: Maintenance & Repair

my car had a dual exhaust when i bought it but since then i had to replace it
with a single which left one 02 sensor hanging. it ran fine for a while but now
my one sensor that is hooked up is bad so when i replace this is the other one
going to effect my car if not hooked up some how?

1 Answer


All your O2 sensors should be hooked up properly or your CEL will be tripped due to the O2 sensor detecting a problem.

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