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  1. 4.1 Faults & Fixes
    Hello, just got a 99 rav4 with 130,000 miles. The only code I was seeing was the system too lean po171, and when the light is on it would idle unsteady above 1k rpm. When turning the code off the idle was better and throttle response was more smooth which I assumed means the o2 was forcing the...
  2. 4.2 Faults & Fixes
    My 04 Toyota RAV4 2WD got codes C1201, P0420, and P2238. Does anybody how I can fix this problem yourself. I’ve read on threads that’s it’s the a/f sensor upstream and once replaced, the code p2238 will remove along with the rest is this correct or am I missing somthing?! Thanks!!!
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