P1128-30 PDF

A manual that details the diagnostic and troubleshooting procedures for oxygen sensing adaptation and idle range issues for automotive systems. It covers both Bank 1 and Bank 2, detailing specific diagnostic conditions such as time elapsed after engine startup and engine temperature. Possible fault causes include incorrect signals from the MAF sensor and issues with fuel pressure or EVAP canister purge valves. The document provides work instructions for checking various components and connections, with specific parameters for what is considered 'OK' and corrective actions if not.