Oxygen sensor bank 2 confusion
#1
Oxygen sensor bank 2 confusion
Ok my jaguar x type needs the oxygen sensor bank 2 replaced. It's throwing obd code 1647. I was told it's under the airbox and I was told it's on top of the catalytic converter so which one is it? I really need to replace the correct one. Thx to anybody that can clarify the correct location. Thx
#2
#3
Ok my jaguar x type needs the oxygen sensor bank 2 replaced. It's throwing obd code 1647. I was told it's under the airbox and I was told it's on top of the catalytic converter so which one is it? I really need to replace the correct one. Thx to anybody that can clarify the correct location. Thx
Last edited by Jac; 05-25-2014 at 07:38 AM.
#4
The upstream sensor is the one before the catalytic converter. Downstream is the one in the catalytic converter. Upstream reads air/fuel mixture and sends signal back to engine control unit to adjust fuel mixture. The downstream sensor simply determines if the catalytic converter is working correctly and not clogged or burning out.
The one you want is #1 in the diagram above on the radiator side of the engine in the exhaust manifold above the catalytic converter.
Another easy way to tell is the heated sensor (HO2S) in the exhaust manifold has a little heating element in it so that it comes up to temperature quickly and can send the correct reading to the engine computer much earlier. That's why the upstream/heated sensors are 4 wire and cost more than the downstream sensors that are 3 wire and cheaper.
The one you want is #1 in the diagram above on the radiator side of the engine in the exhaust manifold above the catalytic converter.
Another easy way to tell is the heated sensor (HO2S) in the exhaust manifold has a little heating element in it so that it comes up to temperature quickly and can send the correct reading to the engine computer much earlier. That's why the upstream/heated sensors are 4 wire and cost more than the downstream sensors that are 3 wire and cheaper.
Last edited by ltmax; 05-25-2014 at 07:32 AM.
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Jac (05-25-2014)
#5
The upstream sensor is the one before the catalytic converter. Downstream is the one in the catalytic converter. Upstream reads air/fuel mixture and sends signal back to engine control unit to adjust fuel mixture. The downstream sensor simply determines if the catalytic converter is working correctly and not clogged or burning out.
The one you want is #1 in the diagram above on the radiator side of the engine in the exhaust manifold above the catalytic converter.
Another easy way to tell is the heated sensor (HO2S) in the exhaust manifold has a little heating element in it so that it comes up to temperature quickly and can send the correct reading to the engine computer much earlier. That's why the upstream/heated sensors are 4 wire and cost more than the downstream sensors that are 3 wire and cheaper.
The one you want is #1 in the diagram above on the radiator side of the engine in the exhaust manifold above the catalytic converter.
Another easy way to tell is the heated sensor (HO2S) in the exhaust manifold has a little heating element in it so that it comes up to temperature quickly and can send the correct reading to the engine computer much earlier. That's why the upstream/heated sensors are 4 wire and cost more than the downstream sensors that are 3 wire and cheaper.
#6
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