ES - 5th Gen (2007-2012) Discussion topics related to 2007+ ES350

PO500 code, but under strange circumstances

Old 05-06-12, 08:11 AM
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Joevette57
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Default PO500 code, but under strange circumstances

I am getting a PO500 code, but it never sets the code during the daytime. It will only set the codes at night when the lights come on using the auto setting. I can reset the codes and it will be fine during the next day. When it sets the PO500 code, it also sets a trans code of $E9, and an engine code of $E8. Car still drives properly when the codes are set.
Old 05-06-12, 10:33 AM
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GS4_Fiend
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Get that Vehicle Speed Sensor checked out.
Old 05-06-12, 07:14 PM
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I am going to get that done, I'm just curious as to why it only sets the code when the lights come on automatically. Didn't know if the $ codes might be a clue.
Old 05-06-12, 07:42 PM
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The speed sensor will cause transmission related problems. I would change a new speed sensor clear code and see what happens.
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