To operate efficiently, an engine must have the correct air-fuel ratio. The PCM/ECM (powertrain control module) decides how much fuel is injected into the engine. The sensors around the engine help it calculate the correct levels. The oxygen sensor (O2) ...
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P0404 Exhaust Gas Recirculation (EGR) Circuit Range/Performance Fault: What is it?
This indicates that the EGR valve or sensor is operating outside of parameters set by the manufacturer. The EGR sensor or valve is not operating within the parameters set by the manufacturer. The cylinder temperature is lowered, which reduces nitrogen ...
P0306 Cylinder 6 Misfire Detected Fault: What is it?
The cylinders in engines convert fuel into mechanical power. To maximize engine power, the air-fuel mix in the cylinders must be ignited at just the right time. The P0306 code will be recorded if a misfire is detected in the ...
P0131 Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 1) Fault: What is it?
Oxygen sensors are used to measure the amount oxygen in exhaust gases. The Powertrain Control Module of your vehicle (PCM/ECM/ECU), calculates fuel control using the signal received from the oxygen sensor located upstream (sensor 1), which is located before the ...
P0137 Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 2) Fault: What is it?
The main computer of your vehicle (PCM/ECM/ECU), triggers the fault code P0137 if it detects an oxygen sensor voltage below the pre-programmed parameters by the manufacturer for a period of time. The code indicates an excess of oxygen in exhaust ...