Have to bring my 1991 Mustang in for E-test shortly. The only concern I have is that I have a Check Engine Light comes on after 10-15 minutes of driving. Codes it puts out are 41, 91 which refer to the LH and RH Oxygen sensors and running lean, however ZR checked it and the car is not running lean.
Codes only appeared after new Oxygen sensors and some emission sensors were put in including the charcoal canister.
Since the OBD1 testing doesn't hook up to the computer and is only a sniff test, assuming the test results are good, which they should be, will it pass or fail if my check engine light comes on during the test?