Quote:
Originally Posted by ericsanchezm
How can I fix it?
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First, using a Porsche specific scan tool, check the air/fuel ratio output on bank 1, that would confirm the code. Then pull and read the plugs on that bank to see if only one or more cylinders are running lean. Another pathway is to use a non contact pyrometer and check the individual exhaust header runner temperatures to see if one is hotter than the others. If only one cylinder, check the injector pulse width on that injector to see if it is functioning properly. If all cylinders are lean, smoke test that bank for vacuum leaks.