the engine computer (PCM) turns the "Check Engine" light (MIL) ON and sets the trouble code P0171 - System Too Lean for Bank 1 and (or) P0174 - System Too Lean Bank 2, depending on which cylinder bank is affected. The PCM also stores the ...
What does the first character of the OBD fault code mean? The first character in an OBD fault code is a letter that identifies the affected car system: P (Powertrain)– engine or transmission C (Chassis)– chassis category, which includes the frame, steering, and suspension systems ...
Although this pending code is helpful to the technician to know that a fault has, in the past, been detected, further testing will be needed to find the root cause of the problem. Check and record the freeze-frame information. This indicates when the DTC was set, and this not only will...
P0172 Error Description System to Rich (Bank 1) The Adaptive Fuel Strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a lean calibrated limit. See Possible Causes for DTC P0171 See Diagnostic Aides for DTC P0171 P0174 Error Description ...
P0403:When you see this code, your vehicle has a short or open circuit in the vacuum control solenoid or wiring. P0404:This DTC has to do with the vehicle’s EGR Control Circuit Range/Performance and tells you that your system’s valve or sensor isn’t working at the specified measureme...