Need help with Diagnostic Codes

Hi ,

The repair manual is at techinfo.toyota.com. At the front of each section (say, the brake section for your ABS/VSC/TRAC codes, the A/C section for the A/C code) you will find a terse list of the codes, where each code listed will have a link to a detail page.

When you get to the detail page, pay the most attention to what's called the "detection condition" for the code (not just the "fortune cookie" line at the top). The detection condition tells you exactly what was happening in the car causing that code to be set.

Reading the manual on techinfo will take a $15 signup. There are apparently ways to get to it, or a lot of it, through a service that may be free through your nearby library; @Elektroingenieur knows more about that.

-Chap

 

Can you please check techstream again, some of those thrown DTCs could have a small cloud or flower icon nearby. Click on that icon and it will display an INF (three digit) subcode which would make it easier to diagnose. Please repost any DTCs with the INFs.

Example: There are 7 possible INF subcodes for DTC C1253 - https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/repair%20manual/04pruisr/05/21avn/cic12525.pdf