Conditions for Running the DTC

P0171, P0172, P0174, P0175

• { P0171 } DTC P0455 = Not set
• DTCs related to the following system/component = Not Set
  • B52 Heated Oxygen Sensor
  • B74 Manifold Absolute Pressure Sensor
  • B75C Multifunction Intake Air Sensor
  • B198 Fuel Composition Sensor
  • Q12 Evaporative Emission Purge Solenoid Valve
  • Q17 Fuel Injector
  • Engine Misfire
  • EVAP System
  • Fuel Trim System
• Barometric Pressure = Greater than 70 kPa (10. 2 PSI)
• Device controls are not active.
• Engine Coolant Temperature = -20 to 150°C (-7 to 302°F)
• { P0171, P0172 } Engine Speed = 400 to 6, 100 RPM
• { P0174, P0175 } Engine Speed = 372 to 7, 000 RPM
• { P0172 } EVAP Purge Solenoid Valve Command. = Less than 26%
• { P0175 } EVAP Purge Solenoid Valve Command. = Less than 100%
• Fuel Control Loop Status = Closed Loop
• Fuel level = Greater than 10%
• IAT Sensor = -20 to 150°C (-7 to 302°F)
• MAF Sensor = 1 to 510 g/s
• Long Term Fuel Trim = Enabled
• MAP Sensor. = 10 to 255 kPa (2 to 37 PSI)

Frequency the DTC runs = Continuously - After the running conditions are met