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Hummer
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2007
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H2 4D Utility Pickup
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls And Fuel - 6.0L - DTC P0030 To DTC P0140
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DTC P0135 or P0155
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DTC Descriptors
DTC Descriptors
This diagnostic procedure supports the following DTCs:
DTC P0135 HO2S Heater Performance Bank 1 Sensor 1
DTC P0155 HO2S Heater Performance Bank 2 Sensor 1