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P0138 Diagnostic Trouble Code Discussion for July 2009

Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage


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Trouble Ticket Help Requests for DTC P0138
Help Request Posted
2009 Dodge Ram 1500 Truck ST 4.7L Surge, MIL Lamp on VIN: 1D3HV18P69
P0138: 1/2. Drivability concern comes & goes,but 02 codes are staying active every time till vehicle is shut down.Downstream 02s are now staying around 4.8 V.(5v) biased sensors).All code charts produce the exspected results.Have run redundant wires w/ no change.Just ...
July 06, 2009
1998 Porsche Boxster 2.5L Poor Idle Quality, MIL Lamp on VIN: WPOCA298XW
P0138: Short Circuit to Plus. I have a Boxter with 4 o2s codes PO131,PO137,PO151,PO157 all reading low voltage. I disconnected all o2s and ohmed them out. My result on those were all read OFL. According to alldata they test good. Then I tested then ecm and wiring harness. I checked voltage...
July 20, 2009
1998 Porsche Boxster 2.5L Poor Idle Quality, MIL Lamp on VIN: WPOCA298XW
P0138: Short Circuit to Plus. I have a Boxter with 4 o2s codes PO131,PO137,PO151,PO157 all reading low voltage. I disconnected all o2s and ohmed them out. My result on those were all read OFL. According to alldata they test good. Then I tested then ecm and wiring harness. I checked voltage...
July 22, 2009
2009 Dodge Ram 1500 Truck ST 4.7L Surge, MIL Lamp on VIN: 1D3HV18P69
P0138: 1/2. Drivability concern comes & goes,but 02 codes are staying active every time till vehicle is shut down.Downstream 02s are now staying around 4.8 V.(5v) biased sensors).All code charts produce the exspected results.Have run redundant wires w/ no change.Just ...
July 06, 2009
1998 Porsche Boxster 2.5L Poor Idle Quality, MIL Lamp on VIN: WPOCA298XW
P0138: Short Circuit to Plus. I have a Boxter with 4 o2s codes PO131,PO137,PO151,PO157 all reading low voltage. I disconnected all o2s and ohmed them out. My result on those were all read OFL. According to alldata they test good. Then I tested then ecm and wiring harness. I checked voltage...
July 20, 2009
1998 Porsche Boxster 2.5L Poor Idle Quality, MIL Lamp on VIN: WPOCA298XW
P0138: Short Circuit to Plus. I have a Boxter with 4 o2s codes PO131,PO137,PO151,PO157 all reading low voltage. I disconnected all o2s and ohmed them out. My result on those were all read OFL. According to alldata they test good. Then I tested then ecm and wiring harness. I checked voltage...
July 22, 2009