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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 P2178, P2180, P2188, or P2190 >> Conditions for Setting the DTC >> P2188 or P2190

P2188 or P2190

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

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