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P0056 Diagnostic Trouble Code Discussion for April 2012

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

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Trouble Ticket Help Requests for DTC P0056
Help Request Posted
2004 Acura MDX 3.5L MIL Lamp on VIN: 2HNYD18264
P0056: Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction. P0056 Bank2 Sensor2 heater circuit malfunction. Snap-on Modis shows that B2S2 heater circuit is off with zero voltage. B2S2 heater circuit fault. Ohmed sensor heater circuit and found 7.4 ohms. Supply voltage on heater curcit is 13.74vdc. Installed new sensor ...
April 30, 2012