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2000 Rx300 Engine Error Codes P1130 And P0171


WINSTON2009

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My 2000 RX300 check engine light was on. I used OBD II and got error codes P1130 and P0171. It seems indicating that I have to replace A/F sensor (bank 1 sensor 1). (I have MAF sensor replace less than a year ago at a Toyota dealer). Here are my questions

1. Where is the A/F sensor bank1 sensor 1 located?

2. Is it something I can do myself to replace?

Thanks

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You need to search this forum for these codes. There are several threads with this same problem and what was done to fix the problem. It isn't always the A/F sensors. I had the same problem and it turned out to be a bad gas cap (replaced for $7 at Auto Zone) and also the hose under my air filter box had come off. This happens quite often when you get your oil changed and the tech takes the lid off of the box. You didn't just get you oil changed did you?

Again, do some searches for these codes or A/F sensor problems.

Good luck.

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You need to search this forum for these codes. There are several threads with this same problem and what was done to fix the problem. It isn't always the A/F sensors. I had the same problem and it turned out to be a bad gas cap (replaced for $7 at Auto Zone) and also the hose under my air filter box had come off. This happens quite often when you get your oil changed and the tech takes the lid off of the box. You didn't just get you oil changed did you?

Again, do some searches for these codes or A/F sensor problems.

Good luck.

Smyrnagc is right, make certain that that is what you need 1st. before you go buying any parts or worse yet installing them and then finding out you've not only wasted your money but you time. It may very well be the problem, but what the code points at is not necessarily the problem. You'll feel a whole lot better spending the time diagnosing the problem right and only doing the work once to fix the problem than assuming that the OBD code pointed directly like a lazer at the problem and finding out that wasn't true. Good Luck!

P.S. Use only original eq. Denso A/F ratio sensor if that is the problem!

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