Engine Idles At 1500 RPM And Wont Go Past 3000-3500 RPM. I Have a (CEL) And I Got These Codes. P0135 02 Heater Circuit (Bank 1 Sensor 1), P2279 Intake Air System Leak, P1129 Map Sensor Signal Higher Than Expected, P0507 Idle Air Control System RPM Higher Than Expected. My Question Is If My ECU Detects An Intake Air System Leak Could That Put My Car Into Limp Mode And Potentially Be The Reasoning For Throwing Multiple Codes? Are There Any Common Areas On This Model To Look For A Possible Vacuum Leak? Any Help Is Greatly Appreciated.