Thread: Error code P1128, endless hole of error codes
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Old 09-25-2025, 09:45 PM   #6
997_986
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Join Date: Jul 2024
Location: Western Europe
Posts: 228
Thanks for reporting back. Number 4 in this chart mentions "Intake air system leaking" so you choose the right work

https://charm.li/Porsche/2000/Boxster%20%28986%29%20F6-2.7L/Repair%20and%20Diagnosis/A%20L%20L%20%20Diagnostic%20Trouble%20Codes%20%28% 20DTC%20%29/Testing%20and%20Inspection/P%20Code%20Charts/P1128/DME%207.8/Oxygen%20Sensing%20Adaptation%2C%20Idle%20Range%2C %20Bank%201%20-%20Above%20Limit/
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