Helpful Automotive Resources
P0090 Code: Fuel Pressure Regulator Control Circuit / OpenDiagnostic trouble code (DTC) P0090 stands for “Fuel Pressure Regulator Control Circuit/Open.” This code sets when the PCM has determined that there is an open control circuit in the electronic fuel pressure regulator. This code may also set when the PCM is unable to control the fuel pressure regulator, or P0149 Code: Fuel Timing ErrorDiagnostic trouble code (DTC) P0149 stands for “Fuel Timing Error.” This code sets when the powertrain control module (PCM) has detected a fuel pressure signal indicating a malfunction with the fuel pump timing. The PCM may also store this code if the actual fuel pressure and the commanded fuel pressure P0148 Code: Fuel Delivery ErrorDiagnostic trouble code (DTC) P0148 stands for “Fuel Delivery Error.” This trouble code is stored when the powertrain control module (PCM) has detected that the actual fuel pressure and desired fuel pressure do not match. This code may also set if the PCM determines that the input signal from the