What Does P0307 Mean? The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. When you see P0307 engine fault code on your engine code reader this description will help you. engine code P0307P0307 fixobd P0307dtc P0307obd code P0307obd2 P0307P0307 car codediagnostic code P0307car code P0307check engine code P0307fehlercode P0307P0307 fiatcodigo P0307codigo falla P0307P0307 kody b??dówcodigo de falla P0307 What are the common causes of P0307 ? Faulty spark plug in cylinder 7 No compression in cylinder 7 Damaged or worn out spark plug wires Damaged or worn spark plug coils Damaged distributor cap (does not apply to all vehicles) Damaged rotor button (does not apply to all vehicles) Faulty fuel injector Clogged exhaust gas recirculation (EGR) valves or tubes Burned valves Inaccurate ignition timing Vacuum leaks Low fuel pressure Head gasket leaks Cracked distributor cap Faulty camshaft sensor Faulty crankshaft sensor Faulty mass air flow (MAF) sensor Faulty oxygen (O2) sensor Faulty throttle position sensor Faulty catalytic converter Faulty PCM How do you troubleshoot P0307 ? Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. Process Tips Diagnostic trouble code P0307 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise. Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P0307. Fortunately, P0307 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996. Searches related to P0307 - Cylinder 7 Misfire Detected cylinder 7 misfire silverado cylinder 7 misfire ford f150 p0307 jeep grand cherokee p0307 lincoln navigator cylinder 7 misfire repair cost p0307 stabilitrak where is cylinder 7 on 5.3 chevy cylinder 7 misfire ford expedition
