Conditions for Running the DTC

WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Before the ECM can report DTC P2177 failed, DTCs P0030, P0031, P0032, P0053, P0101, P0121, P0122, P0123, P0130, P0131, P0132, P0133, P0135, P0221, P0222, P0223, P0335, P0336, P0338, P0443, P0458, P0459, P167A, P2096, P2097, P2196, P2231, P2237, P2243, P2251, and P2626 must run and pass.
DTCs P0010, P0011, P0013, P0014, P0020, P0021, P0023, P0024, P0455, P0496, P0117, P0118, P0125, P2088, P2089, P2090, P2091, P2092, P2093, P2094, P2095, and P2176 are not set.
The engine speed is between 1000-3000 RPM.
The fuel system is in closed loop.
The long fuel trim is active.
The engine coolant temperature (ECT) is more than 60°C (140°F).
The evaporative emission (EVAP) canister purge solenoid valve is not enabled.
The intake air temperature (IAT) is less than 60°C (140°F).
The fuel level is more than 10.5 percent.
The mass air flow (MAF) is between 10-70 g/s.
The amount of accumulated air flow into the engine is more than 700 grams.
DTC P2177 runs continuously once the above conditions are met for at least 300 seconds.