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Ascender RWD
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Engine Control System & Fuel System - 4.2L - DTC P2119 To DTC P2A01
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DTC P2A01
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Conditions for Setting the DTC
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Notes
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Conditions for Setting the DTC: Notes
The PCM detects that the HO2S 2 did not transition below 300 mV and above 750 mV during the passive test.
One of the following tests fail: