Question about 2005 Cadillac CTS 3.6
My chceck engine light is on I got it checked out and i get one code P0056 bank 2 sensor 2. Two mechanics told me it would be the sensor closest to the ground on the passengers side.So I changed it and i keep getting the same code. I looked on the net and found a diagram on an 03 cts and it says the sensor i need to change is on the drivers side. before i start checking for broken wires I would like to know for sure if i changed the wrong sensor? I dont have a garage and its super cold outside and I have to pass the emissions test this month.
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Posted on Jan 02, 2017
Bank 2 Sensor 1 is on the driver side - follow the right side of the engine down the headers which attaches to the catalytic converter. The o2 Sensor you're asking about (Bank 2 Sensor 1) is before the Catalytic. The o2 Sensor after the Catalytic is Bank 2 Sensor 2. Bank 1 Sensor 1 is on the passenger side as well as Bank 1 Sensor 2.
Posted on May 09, 2009
you say you replced sensors but some times that code could be also be the o2 sensors you should have 2 maybe 4 did you check them
Posted on Apr 15, 2010
The problems you are describing indicate to me that you likely need to replace the coil pack that runs from the spark plugs ,and the plug wires end up at it.It also may be the spark plug wires,get a water bottle and spray the wires after dark and if you get a light show from them then replace them,if not,replace the coil pack.
Posted on Jul 15, 2010
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