Conditions For Running DTC
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- DTCs P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0200, P0220, P0300, P0335, P0336, P0404, P0500, P0502, P0503, P0506, P0507, P0562, P0563, P1125, P1404, P2135 are not set.
- The ignition 1 signal parameter is between 11-18 volts.
- The Throttle Position (TP) sensor parameter is less than 1.2 percent.
- The Intake Air Temperature (IAT) sensor parameter is between 32-212° F (0-100° C).
- The Engine Coolant Temperature (ECT) sensor parameter is more than 140° F (60° C).
- The engine speed parameter is between 725-1700 RPM.
- The Manifold Absolute Pressure (MAP) sensor parameter is between 18-42 kPa.
- The Mass Air Flow (MAF) sensor parameter does not change more than 3 grams per second.
- The vehicle speed sensor parameter is more than 25 MPH during deceleration.
- The Barometric Pressure (BARO) is more than 75 kPa.
- The vehicle will need to be driven at more than 50 MPH, and then allowed to decelerate. When the vehicle is decelerating, while meeting all of the criteria listed above, the PCM will enable the EGR flow test to run. As the EGR flow test is running, you will see the Desired EGR position parameter and the EGR position sensor parameter on the scan tool momentarily change from 0 to a calibrated value above 0.