OBD Code P0150
#1
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I just purchased my first Land Rover last week. It is a 2001 Discovery Series II SE. My check engine light came on so i went to AutoZone and had them read the code which came out P0150. Told me that the o2 sensor was bad on bank 2. Where is bank 2? I dont know much about the Land Rover yet but does the Series II have 2 or 4 O2 Sensors? should I change them all or just the one?
#2
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I just purchased my first Land Rover last week. It is a 2001 Discovery Series II SE. My check engine light came on so i went to AutoZone and had them read the code which came out P0150. Told me that the o2 sensor was bad on bank 2. Where is bank 2? I dont know much about the Land Rover yet but does the Series II have 2 or 4 O2 Sensors? should I change them all or just the one?
It's best if you replace all four at once, if you just replace one, it may throw a code because you're using a new sensor with old ones. You can get new ones from www.roverparts.com , that's where most of us go. I'm sure others will chime in with other places that they've gotten them from.
#3
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You could, in theory replace just the one sensor that is throwing a code, but there is a chance the other upstream sensor could fail soon, as they are both probably the same mileage. The upstream sensors (before the converter) control fuel input to the engine. All the downstream (after converter) sensors do is monitor converter efficiency (tell the computer if the converter is working).
I replaced both upstream sensors on mine recently as it was close to 100k miles (no codes), just to increase fuel economy (1-2MPG gain), but I have no plans to replace the downstream sensors until they throw a code, as they do nothing more than monitor the converter.
I replaced both upstream sensors on mine recently as it was close to 100k miles (no codes), just to increase fuel economy (1-2MPG gain), but I have no plans to replace the downstream sensors until they throw a code, as they do nothing more than monitor the converter.
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