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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1713 (Engine Controls And Fuel - 3.6L (LCS) - DTC P2231 To DTC P2636) >> DTC P2270 or P2272 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The ECM detects that the rear HO2S voltage is less than 650 mV for greater than 100 seconds, then an intrusive test is performed. The ECM will enrich the fuel mixture up to 30 percent and then wait for 600 seconds at 30 percent. The ECM detects that the HO2S voltage is less than 650 mV during the intrusive test for greater than 4 seconds, the DTC sets.

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