Question about 2004 Ford Escape
I bet you mean O2 sensor. 1st sensor is in exhaust before the converter, 2nd is after converter. 2nd one just indicates when converter is not doing its job, so not crucial to fix as far as running. However, when one O2 sensor fails, can the others be far behind?
Posted on Dec 18, 2014
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Posted on Jan 02, 2017
SOURCE: i have error codes p0156 p0161
Check the wire harness near the top of the engine in the rear. They were good for rubbing through on the trans fill tube bracket. Judging by the code you have 4 sensors. you would be interested in the drivers side rear sensor.
Posted on Nov 13, 2008
Bank one is toward the front of the vehicle. Sounds like the heated oxygen sensors have gone bad. The Oxygen Sensors are located in the exhaust pipe and require a special socket to remove and replace.
Posted on Jan 16, 2009
B1 means the sensor is located on the same bank of the engine that has the #1 cylinder. B2 is located on the opposite bank.
S1 means the sensor is located BEFORE the catalytic converter
S2 means the sensor is located AFTER the catalytic converter
You didn't say which engine you have, so I've included the diagrams of both 4 cyl and 6 cyl so you can see the banks
Posted on Oct 20, 2009
Hello j_abell: My name is Roger and I will help you. Bank two sensor 2 will be on the drivers side of the engine. Second sensor back. behind the catalytic converter. Bank one sensor one would be on the passenger side of the motor. See attached picture.Should you need further help please just ask. Please rate the answer. This way I know it was helpful. Thank You for using Fix Ya. Roger
Posted on Jul 27, 2010
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