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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Control System - 4.6L (LH2) - DTC P2138 To P2636) >> DTC P2231 or P2234 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The ECM detects that there have been more than 80 samples out of a 100 sample block in which the lambda sensor signal has changed at the same time the sensor heater was cycled ON and OFF.

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