Helpful Automotive Resources
September 25, 2020 Evaporative Emission Control (EVAP) System 101: The BasicsBut that doesn’t mean you should ignore a problem with the EVAP system; on the contrary, an EVAP failure is almost guaranteed to prevent your car from passing a state emissions test. What’s more, a problem in the system increases the harmful emissions coming from your vehicle.
September 22, 2020 P0004 Code: Fuel Volume Regulator Control Circuit HighDiagnostic trouble code (DTC) P0004 code stands for “Fuel Volume Regulator Control Circuit High.” This code indicates that the vehicle’s computer (also known as the powertrain control module or the PCM) has detected that the electrical reading in the fuel volume regulator control circuit is above the expected value. As September 15, 2020 P0456 Code: Evaporative Emission System Small Leak DetectedDuring a typical “small leak” test, the PCM first opens the purge valve to create a vacuum in the system. The device then seals the EVAP system by closing both the purge valve and the vent valve.
Your PCM may log the code P0456 if it determines that there’s a minor