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Isuzu
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2007
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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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Rich Intrusive Test
Rich Intrusive Test
The PCM detects that the HO2S 2 is less than 750 mV for 10 seconds.
The HO2S 1 is more than 600 mV.
DTC P2A01 sets within 13 minutes when the above conditions are met.