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Home › Saturn › 2005 › Relay AWD › Repair and Diagnosis › Engine Performance › System › Engine Control System - 3.5L - DTC P0138 - P0443 › DTC Tests › DTC P0138 › Conditions for Setting the DTC

Conditions for Setting the DTC

The PCM detects that the HO2S 2 signal voltage is more than 924 mV for at least 2 minutes.
This diagnostic runs continuously.