Conditions for Running the DTC

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0030, P0050, P0107, P0108, P0112, P0113, P0117, P0118, P0135, P0155, P0335, P0336, P0401, P0403, P0406, P0641, P0651, P1128, P1129, P2413, P2414, and P2415 are not set.
The battery voltage is at least 10.5 volts.
The EGR valve is commanded open to at least 0.25 mm (0.010 in).
Engine speed is less than 4,000 RPM.
DTC P0404 runs once per drive cycle once the above conditions have been met.