Conditions for Running the DTC

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0030, P0031, P0036, P0037, P0038, P0068, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0121, P0122, P0123, P0125, P0128, P0130, P0131, P0132, P0133, P0134, P0135, P0136, P0137, P0138, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0300, P0315, P0326, P0327, P0336, P0340, P0341, P0442, P0446, P0452, P0453, P0455, P0496, P0500, P0502, P0506, P0507, P0601, P0602, P0606, P0641, P0722, P0723, P1133, P1134, P1516, P1621, P2135, P2138, P2176 are not set.
Before the ECM performs the idle test, the vehicle must be driven under the following conditions:
- The engine speed is greater than 1,250 RPM
- The engine run time is greater than 100 seconds
- Both conditions exist for greater than 18 seconds
The vehicle speed is less than 1.6 km/h (1 mph)
The throttle position (TP) is less than 2 percent
The mass air flow (MAF) is between 2-18 g/s
The engine is operating in in Closed Loop
The fuel trim learn is enabled
The Engine Coolant Temperature (ECT) is between 50-125°C (122-257°F)
The Barometric Pressure (BARO) is greater than 70 kPa
The Catalytic Converter Calculated Temperature parameter is between 600-800°C (1,112-1,472°F) for greater than 6 minutes
The Intake Air Temperature (IAT) is between -20 and +25°C (-4 and +77°F)
The battery voltage is greater than 11 volts
The transmission is in gear-Automatic transmissions only
The short term fuel trim (FT) is between -10 and +10 percent
The engine is idling for less than 50 seconds
This diagnostic attempts one test during each valid idle period once the above conditions have been met. This diagnostic attempts up to 8 tests during each drive cycle.