O2 Sensor issues? - Land Rover Forums : Land Rover and Range Rover Forum
 
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post #1 of 4 (permalink) Old 12-11-2012, 08:42 AM Thread Starter
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O2 Sensor issues?

I recently replaced my MAF, entire catalytic converter y pipe, and put in 4 new bosch premium O2 Sensors. The truck is running better than ever (at least since I bought it) but now the infamous SES light has returned and I'm getting the following codes: P0161, P1175, P1172. Any help would be greatly appreciated.

Current Vehicle: 2000 Land Rover Discovery Series II V8 (119k miles)
Previously owned: 1995 Discovery 1 (Miss is dearly)
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post #2 of 4 (permalink) Old 12-11-2012, 09:46 AM
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Bank 2 sensor 2 has a bad heater circuit and both banks are running lean which does not make a lot of sense since you replace all those parts,
Curious, why did you throw all those parts at it before and what codes did you have then?

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post #3 of 4 (permalink) Old 12-11-2012, 10:37 AM
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i don't buy Bosch sensors anymore..

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post #4 of 4 (permalink) Old 12-11-2012, 02:45 PM Thread Starter
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Well The MAF sensor had gone bad and was causing the engine to stall at stops and low RPMs. After unsuccessful attempts to fix it by cleaning it I just went ahead and replaced it. The Y pipe was changed out with both catalytics because mine had gone bad and I managed to pick some up off a disco being sold for parts at quite a bargain (student budget). The O2 sensors were completely fried and considering my terrible mileage I just went ahead and swapped those out.

Current Vehicle: 2000 Land Rover Discovery Series II V8 (119k miles)
Previously owned: 1995 Discovery 1 (Miss is dearly)
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