The evaporative emissions control (EVAP system) prevents fuel vapours escaping into atmosphere. Carbon pellets are used to absorb and store fuel vapours. Engine control module (ECM/PCM/ECU) continuously monitors the ventilation control valve. The ECU opens the ventilation control valve when ...
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P0442 Evaporative Emission Control System Leak Detected (Minor Leak) Fault: What is it?
The powertrain control module of your vehicle continuously monitors for leaks or other problems in the Evaporative Emission Control System. The fault code P0442 will be triggered when a fuel vapour is detected in the EVAP. The P0442 fault code ...
P0441 Evaporative Emission System Incorrect Purge Flow Fault – What is it?
The P0441 code is a diagnostic trouble code for the powertrain. Any vehicle with OBD-II can trigger it. This indicates that the EVAP system is not working properly. The evaporative system (EVAP), prevents petrol vapours escaping from the fuel tank ...
P0455 Major Evaporative System Leak Detected Fault: What is it?
The fault code P0455 indicates a significant leak in the Evaporative Emissions Control System (EVAP). When the vehicle computer detects a major leak in the EVAP, it will generate fault P0455. The P0440 code indicates a fault with the EVAP ...
P0303 Cylinder 3 Misfire Fault – What is it?
The fault code P0303 will be triggered by the vehicle computer when it detects multiple misfires on cylinder 3. What are the symptoms of fault code P0303? P0303 can have different symptoms. The driver may not see any other symptoms ...
P0135 Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
During engine startup, the engine control module (PCM/ECM/ECU), tests the oxygen heater circuit for excessive current, short circuits, and open circuits. The PCM will generate fault code P0135 if it detects an issue with the first sensor in the first ...
P0340 Fault Code – Camshaft Position Sensor Circuit Fault
The camshaft sensor is an integral part of your vehicle’s electrical system. This sensor requires a series of cable and electrical connectors to work properly. There may therefore be multiple potential problems throughout the system. The camshaft sensor is used ...
P0299 Turbocharger/Supercharger “A” Underboost Condition Fault: What is it?
If you receive the fault code P0299 it means that there is a problem in your turbocharger. This code is displayed when the pressure in the ‘A” bank is not sufficient. The affected vehicle brands are Ford, GMC Chevy, VW, ...
P0456 Evaporative Emission System Minor Leak Detected Fault: What is it?
The complex emissions system in your vehicle is designed to prevent fuel leaks. This system is the cause of the P0456 fault. It indicates that there has been a small leak detected. The engine control module tests the system regularly ...
P0603 Internal Control Module Keep Alive Memory (KAM) Error
The engine control computer of your vehicle not only controls the electronic components, but it also stores data about your driving style. The computer adjusts the vehicle’s performance as it ‘learns” your driving style. This component of information storage is ...