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What does the P0304 Cylinder-4 Misfire Detected mean? P0304 code gets triggered when the Engine Control Module detects an engine misfire on cylinder-4. Misfire means that the combustion process inside one or more cylinders isn’t happening properly. You may also see other misfire-related codes, such as P0300 (random/multiple misfires) or P0301–P0308, indicating issues in other…
What does the P0455 Evaporative emission (EVAP) system -large leak detected mean? P0455 code gets triggered when the Engine Control Module (ECM) detects a condition in the EVAP control system that indicates: In simple terms, it means the system has detected a large leak in the fuel vapor containment system. What is EVAP System? The purpose of the…
What does the P0303 Cylinder-3 Misfire Detected mean? P0303 code gets triggered when the Engine Control Module detects an engine misfire on cylinder-3. Misfire means that the combustion process inside one or more cylinders isn’t happening properly. You may also see other misfire-related codes, such as P0300 (random/multiple misfires) or P0301–P0308, indicating issues in other…
What does the P0302 Cylinder-2 Misfire Detected mean? P0302 code gets triggered when the Engine Control Module detects an engine misfire on cylinder-2. Misfire means that the combustion process inside one or more cylinders isn’t happening properly. You may also see other misfire-related codes, such as P0300 (random/multiple misfires) or P0301–P0308, indicating issues in other…
What does the P0301 Cylinder-1 Misfire Detected mean? P0301 code gets triggered when the Engine Control Module detects an engine misfire on cylinder-1. Misfire means that the combustion process inside one or more cylinders isn’t happening properly. You may also see other misfire-related codes, such as P0300 (random/multiple misfires) or P0302–P0308, indicating issues in other…
What does the P0300 Random or Multiple Cylinder Misfire Detected mean? P0300 code gets triggered when the Engine Control Module detects an engine misfire that’s either random or showing up on multiple cylinders. Misfire means that the combustion process inside one or more cylinders isn’t happening properly. You may also find another OBD-II code, like…
What does the P0430 Catalyst Efficiency Below Threshold (Bank 2) mean? P0430 code gets triggered when the Engine Control Module detects a condition that indicates that the catalytic converter is operating below the minimum allowable efficiency threshold. The purpose of a catalytic converter is to use a chamber called a catalyst to change the harmful…
What does the P0420 Catalyst Efficiency Below Threshold (Bank 1) mean? P0420 code gets triggered when the Engine Control Module detects a condition that indicates that the catalytic converter is operating below the minimum allowable efficiency threshold. The purpose of a catalytic converter is to use a chamber called a catalyst to change the harmful…
What does the P0175 System too Rich (Bank 2) mean? P0175 code gets triggered when the Engine Control Module receives an input signal from the oxygen sensor—also called the air-fuel ratio sensor—indicating that the air/fuel mixture has been running too rich for an extended period of time. Now, let’s talk specifics. A rich mixture means…
What does the P0160 Oxygen Sensor Circuit No Activity Detected (Bank 2, Sensor 2) mean? P0160 code gets triggered when the Engine Control Module has detected inactivity from the oxygen sensor, also known as the air-fuel ratio sensor. This inactivity typically indicates that the oxygen sensor isn’t sending voltage signals back to the ECM, often…