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Home › Chevrolet › 2003 › Impala LS › Repair and Diagnosis › Engine Performance › System › Engine Control System Self-Diagnostics - 3.8L › Diagnostic Tests › DTC P0140: Ho2S Circuit Insufficient Activity - Sensor 2 › Conditions For Setting DTC

Conditions For Setting DTC

The PCM detects that the HO2S 2 signal voltage remains between 412-490 mV for more than 90 seconds.

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