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Posted on Jan 02, 2017
BANK 1 SENSOR 1 IS THE ONE IN THE EXHAUST MANIFOLD. BANK 2 SENSOR 2 IS BELOW THE CATALYTIC CONVERTER.
P0171 SHOULD GO AWAY WITH A GOOD O2 SENSOR BUT DO CHECK FOR VACUUM LEAKS TO BE SURE. 3.1/3.4L ENGINES HAVE A BAD DESIGN INTAKE MANIFOLD GASKET, THE LEAK OIL, COOLANT, AND AIR.
Posted on Jul 13, 2009
1. Turn ignition switch to off position and leave the key in the switch.
2. Disconnect the battery.
3. Take a small diameter. paper clip and insert it into the small hole in the face of the ignition switch. You will feel a small button that you depress.
4. While depressing the button, turn the key to the accessory position (counter clockwise) and using the key remove the cylinder.
5. You can now remove the bezel by unscrewing it CCW.
6. This will allow you to remove the ignition switch from the dash and disconnect the wire harness plug from the rear of the switch.
7. They don't always come apart easily , and may require some Jiggling of the key and the wire.
Posted on Jul 27, 2010
SOURCE: where is the rear "b2
Oxygen sensors are always numbered like this:
Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2
Some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2
Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.
Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.
Hope helps (remember to rate this).
Posted on Oct 06, 2010
p0134 is the upstream 02 sensor staying center and will cause a drivability problem. you don't need to replace both of them, the one at fault is the upstream one, mounted on the exhaust manifold.I do it under the vehicle while on a lift, if you can see it from behind the engine and access it, just remove it. spray it down with some penetrating liquid before attempting to remove it
Posted on Oct 20, 2011
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