P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…
Tag: P043f
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…
P043f Evaporative Emission System Reference Orifice High Flow
P0440 Buick EVAP Canister Purge Regulator Valve Possible causes – Missing or loose fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap– EVAP canister or fuel tank leaks– EVAP system hose leaking– Fuel tank leaking Tech description The P0440 Buick code…
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…