Question about 2000 Toyota Camry

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2000 camry code po125 what is proper operating temperture

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  • jhinds1914
    jhinds1914 Oct 26, 2012

    Starting to lose faith in your site. code 125 is insuffent temp to go closed loop. so what temp will signal cpu to switch to closed loop? how hard is it? the code was thrown at 181 degrees. dont mean to be rude but come on, either temp is low or sensor is faulty!

  • jhinds1914
    jhinds1914 Oct 29, 2012

    Really disappointed, I've been a Mechanic for 43 years, I'm not going to become a parts changer now. Verifying the problem is the first step before any repairs are attempted.

  • Hector L. Morales Oct 29, 2012

    It's been my experience that the cause for this problem has been the thermostat. I'm not shooting a dart at it but giving you a solution based on my experience. I've encountered the problem several times and the solution has been a thermostat. Is it possible that you have a faulty sensor? Yes. Have I replaced many of them? No. Could it be the thermostat? Yes. If fluid level is good and is not a faulty sensor what else is there other than a bad PCM? Replace the thermostat and purge the system and you'll be happy.

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Or you have a faulty thermostat. The thermostat may not be allowing the engine to reach operating temperature if stuck open or leaks keeping it in open loop. This will affect fuel milage. If the wiring to the sensor is good replace the thermostat and ensure the coolant level is correct and that ther is no air in the system after servicing.

Posted on Oct 27, 2012

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Posted on Jan 02, 2017

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SOURCE: Getting a PO125 code in my 98 Camry (4cyl),

Same as Solution #2: The coolant temperature sensor looks like a plug (or butterfly plug) that just screws into the lower portion of the radiator (facing engine bay).

All you need to do is to unplug the electrical wire, loosen the existing one, replace quickly with the new one, this way you don't have to drain your coolant again. But do this when your coolant is not hot to touch.

-Henry

Posted on May 01, 2010

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