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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1149 (Engine Controls And Fuel - 3.6L - DTC P0496 To DTC P2235) >> DTC P2177, P2179, P2187, or P2189 >> Conditions for Setting the DTC >> P2187 or P2189

P2187 or P2189

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The Total Fuel Trim Avg. is greater than 40 percent, or the LT FT Idle/Decel is greater than 7 percent. Either condition exists for 4 seconds or for a cumulative of 50 seconds.

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