P0304 Cylinder 4 Misfire Detected diagnostic trouble code (DTC) indicates that the engine’s Powertrain Control Module (PCM) has detected a misfire in cylinder 4. A misfire occurs when the combustion process in a cylinder is incomplete or fails entirely. Cylinder 4 is typically the first cylinder
P0303 Cylinder 3 Misfire Detected diagnostic trouble code (DTC) indicates that the engine’s Powertrain Control Module (PCM) has detected a misfire in cylinder 3. A misfire occurs when the combustion process in a cylinder is incomplete or fails entirely. Cylinder 3 is typically the first cylinder
P0302 Cylinder 2 Misfire Detected diagnostic trouble code (DTC) indicates that the engine’s Powertrain Control Module (PCM) has detected a misfire in cylinder 2. A misfire occurs when the combustion process in a cylinder is incomplete or fails entirely. Cylinder 2 is typically the first cylinder
P0301 Cylinder 1 Misfire Detected diagnostic trouble code (DTC) indicates that the engine’s Powertrain Control Module (PCM) has detected a misfire in cylinder 1. A misfire occurs when the combustion process in a cylinder is incomplete or fails entirely. Cylinder 1 is typically the first cylinder
P0300 Random/Multiple Cylinder Misfire Detected diagnostic trouble code (DTC) indicates that the vehicle’s Powertrain Control Module (PCM) has detected random or multiple cylinder misfires in the engine. A misfire occurs when one or more cylinders fail to ignite the air-fuel mixture at the right time. This
P0175 System Too Rich (Bank 2) diagnostic trouble code (DTC) indicates that the Powertrain Control Module (PCM) has detected an excessively rich air-fuel mixture on Bank 2 (the side of the engine opposite Bank 1). A “rich” condition occurs when there is too much fuel and
P0174 System Too Lean (Bank 2) diagnostic trouble code (DTC) is triggered when the Powertrain Control Module (PCM) detects that the air-fuel mixture in Bank 2 (the side of the engine opposite Bank 1) is too lean. A “lean” condition means that there is too much
P0172 System Too Rich (Bank 1) diagnostic trouble code (DTC) is triggered when the Powertrain Control Module (PCM) detects that the air-fuel mixture in Bank 1 (the side of the engine containing cylinder 1) is too rich. A “rich” condition means there is too much fuel
P0171 System Too Lean (Bank 1) diagnostic trouble code (DTC) is triggered when the Powertrain Control Module (PCM) detects that the air-fuel mixture in Bank 1 (the side of the engine containing cylinder 1) is too lean. A “lean” condition means there is too much air