What Does P0302 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 P0302 engine fault code on your engine code reader this description will help you. engine code P0302P0302 fixobd P0302dtc P0302obd code P0302obd2 P0302P0302 car codediagnostic code P0302car code P0302check engine code P0302fehlercode P0302P0302 fiatcodigo P0302codigo falla P0302P0302 kody b??dówcodigo de falla P0302 What are the common causes of P0302 ? Ignition system component failure is the most common cause when this code is stored in the PCM. Ignition system components, including spark plugs, plug wires and boots, and ignition coils are most often the culprit but beware of other causes, as well. These include lean conditions caused by insufficient fuel pressure, excessive engine vacuum leak/s, EGR system malfunction, clogged catalytic converter/s, or faulty fuel injectors. How do you troubleshoot P0302 ? Replacing spark plugs that are defective or damaged Replacing spark plug wires that are damaged Replacing coil pack wires that are damaged Replacing EGR valves or tubes if they are clogged Replacing valves that are burned Repairing any vacuum leaks Repairing or replacing leaking head gaskets Replacing camshaft sensor if defective Replacing crankshaft sensor if defective Replacing mass air flow sensor if defective Replacing oxygen sensor if defective Replacing throttle position sensor if defective Replacing fuel injectors that are defective Replacing catalytic converter if defective Diagnosing and repairing any related trouble codes stored by the powertrain control module Replacing distributor cap and rotor button, if defective and applicable to the vehicle Repairing defective internal engine components If there is cylinder damage, replace the engine In rare cases, the powertrain control module may need to be replaced or reprogrammed Searches related to P0302 - Cylinder 2 Misfire Detected cylinder 2 misfire repair cost p0302 vw p0302 ford p0302 jeep p0302 chevrolet p0302 code dodge where is cylinder 2 p0302 nissan