Code P0118 Definition Engine Coolant Temperature (ECT) Sensor Circuit High Open Problem What Does P0118 Mean? The engine coolant temperature (ECT) sensor monitors the fluctuations in the temperature of the engine coolant. This ratio is sent to the ECM, which uses this data to regulate the air to fuel ratio, cooling fans, and ignition spark...
Code P0137 Definition O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2) What Does P0137 Mean? Oxygen sensor 2 is the downstream oxygen sensor in relationship to the catalytic converter. It measures the air-fuel ratio coming out of the catalytic converter to ensure the catalytic converter is functioning properly. The catalytic converter works to maintain...
Code P0022 Definition “A” Camshaft Position – Timing Over Retarded (Bank 2) What Does P0022 Mean? The variable valve timing system increases fuel economy and engine performance by regulating the timing of both the intake and exhaust valves. The camshaft is adjusted by the ECM through the use of the oil control valve (OCV). The...
Code P0012 Definition “A” Camshaft Position – Timing Over Retarded (Bank 1) What Does P0012 Mean? The variable valve timing system increases fuel economy and engine performance by regulating the timing of both the intake and exhaust valves. The camshaft is adjusted by the ECM through the use of the oil control valve (OCV). The...
Code P0443 Definition Evaporative Emission Control System Purge Control Valve Circuit Malfunction What Does P0443 Mean? The evaporative control (EVAP) system collects raw fuel escaping from the fuel tank. This information is then communicated to the ECM which regulates the emissions of the vehicle. The P0443 code is set when the ECM detects a malfunction...
Code P0057 Definition H02S Heater Control Circuit Low (Bank 2, Sensor 2) What Does P0057 Mean? The HO2S (heated oxygen) sensor calculates the oxygen ratio of the vehicle’s exhaust. This ratio is then communicated to the ECM which controls the emissions of the vehicle. The P0057 code is set when the ECM detects the HO2S...
Code P0037 Definition H02S Heater Control Circuit Low (Bank 1, Sensor 2) What Does P0037 Mean? The HO2S (heated oxygen) sensor calculates the oxygen ratio of the vehicle’s exhaust. This ratio is then communicated to the ECM which controls the emissions of the vehicle. The P0037 code is set when the ECM detects the HO2S...
Code P0521 Definition Engine Oil Pressure Sensor/Switch Range/Performance What Does P0521 Mean? The oil pressure sensor calculates the oil pressure of the vehicle’s engine. This is then communicated to the ECM in the form of a voltage value. The P0521 code is set when the ECM detects the voltage value is either higher or lower...
Code P0406 Definition Exhaust Gas Recirculation Sensor “A” Circuit High What Does P0406 Mean? The P0406 code is the result of the exhaust gas circulation (EGR) sensor A having a high circuit voltage. This code is set when the ECM identifies the EGR voltage is higher than the specified range, thus triggering the check engine...
Code P0016 Definition Crankshaft Position – Camshaft Position Correlation (Bank 1, Sensor A) What Does P0016 Mean? The crankshaft sensor controls spark timing by alerting the ECM of the position of the crankshaft. The camshaft position tells the engine when to begin the injector sequence by relaying the camshaft’s current position to the ECM. The...
