Join Now
International Automotive Technicians Network

P0056 Diagnostic Trouble Code Discussion for September 2009

Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Control Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0056
Help Request Posted
2007 Chevrolet Avalanche LTZ 5.3L MIL Lamp on VIN: 3GNFK12347
P0056: Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Control Circuit Malfunction. Hello IATN This is my own truck I Cant figure out why i get these codes. Replaced O2 Senser b2s2 OE part and codes will come back next day. Checked Power and return and resistance of the wiring and compared all readings to bank one. Watching the heater amps on...
September 11, 2009
2007 Chevrolet Avalanche LTZ 5.3L MIL Lamp on VIN: 3GNFK12347
P0056: Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Control Circuit Malfunction. Hello IATN This is my own truck I Cant figure out why i get these codes. Replaced O2 Senser b2s2 OE part and codes will come back next day. Checked Power and return and resistance of the wiring and compared all readings to bank one. Watching the heater amps on...
September 11, 2009