Quote:
Originally Posted by Byrnsey2
These faults codes were brought up on the MAC Tools - Mentor Touch Pro Diagnostic Scan Tool
P0413 - Secondary air control valve A open circuit
P0300 - Random / Multiple Cylinders Misfire Detected
P0302 - Cylinder 2 Misfire Detected
P0304 - Cylinder 4 Misfire Detected
P0306 - Cylinder 6 Misfire Detected
Thats all on screen
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Hi Byrnsey. I don't want to send you down a rabbit hole, but have you taken a look at your fuel trims? Is the car running rough? If the problem with the SAI is causing a lean condition at idle (RKAT will be some value positive above 0) I'm pretty sure that can cause misfires especially at low RPMs. Here's a link from ScannerDanner that made me respond. As a symptom, he mentions that "customer has replaced plugs and coils in an attempt to fix". He is focusing on a leaking intake manifold gasket, but lean at idle is lean at idle (I think!).
https://www.scannerdanner.com/chapter-1-misfire-id-compression-test-vacuum-leaks-fuel-trim-head-gasket-restricted-exhaust-low-power-dvom/86-misfire-caused-by-a-vacuum-leak.html
If the car is running rough and you find that your fuel trims are indicating lean at idle, perhaps pull some of the vacuum hoses in the area of the SAI and test them with a vacuum hand pump to ensure they hold vacuum? There's also an electronic change-over valve in the SAI that you may be able to activate within Durametric to aid in diagnosing. Here's a link to keep you on track if you start to pull and test those vacuum lines:
Vacuum line clarification
Best of luck!