Possible causes – Faulty Air fuel Ratio (A/F) Bank 1 Sensor 1– Air fuel Ratio (A/F) Bank 1 Sensor 1 harness is open or shorted– Air fuel Ratio (A/F) Bank 1 Sensor 1 circuit poor electrical connection– Fuel pressure– Fuel injector– Intake air leaks When is the obd code mean? The P2A00 Code is set…