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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System - 4.6L (LH2) - DTC P0010 To P0153) >> DTC P0031, P0037, P0051, or P0057 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different variant/trim than selected.

The ECM detects that the HO2S heater low control circuit voltage is below 2.6 volts when the heater is commanded OFF, indicating an HO2S heater circuit shorted to ground.

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