DTC Parameters

• EGR solenoid is commanded to a 60 percent duty cycle.
• Engine speed is 1600-2200 RPM.
• Engine load is 35-65 percent.
• Engine load change rate is less than 0.35 percent.
• Accumulated air mass is greater than 0.5 kg since engine start.
• Altitude is less than 9023 feet.

DTC will set if the ECM determines EGR flow to be excessive by comparing the MAP sensor signal voltage change along with a steady state value to a modeled value condition exists for longer than 9 seconds continuously, or for a total of 9 seconds up to three independent tests.

DTC diagnostic runs once per ignition cycle up to 9 seconds once the above conditions have been met. However, the diagnostic may take only three seconds to pass.