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Isuzu
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2007
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Ascender 4WD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System & Fuel System - 4.2L - DTC P0135 To DTC P0420
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DTC P0135 or P0141
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DTC Descriptors
DTC Descriptors
This diagnostic procedure supports the following DTCs:
DTC P0135 HO2S Heater Performance Sensor 1
DTC P0141 HO2S Heater Performance Sensor 2