2016 Prius Post Accident Fault Codes

@Elektroingenieur any ideas?

 

I may be wrong, but I suspect that because they are all safety related codes they may be dealer (or techstream) reset only.
Alternatively it may be that some sensors need replacing before the codes can be reset.

 

congrats and welcome!

get yourself mini vci and subscribe to toyota tech info .com for service manual.

 

As @bisco kindly suggests, you should refer to Toyota’s Repair Manual, available by subscription to techinfo.toyota.com, which has general information (“How To Troubleshoot ECU Controlled Systems”) and a step-by-step procedure for each diagnostic trouble code.

Your local libraries (Seattle, King County) also sponsor access to the ChiltonLibrary service, where you’ll find most of the same text and illustrations, but not the Electrical Wiring Diagram or New Car Features books.

I don’t know of any dealer-only repair or maintenance tasks on Toyota vehicles; see my previous posting for more about this. There are, however, some utility and active test capabilities of the Toyota Techstream diagnostic software, which is also available from techinfo.toyota.com, that makers of third-party programs like Carista may not have chosen to license from Toyota.

To use Techstream, you need the software and a compatible J2534 vehicle interface module, such as the MongoosePro MFC2 in the official Techstream Lite kit or a Tactrix Openport 2.0.

B165A and C1A50 are secondhand information—one ECU saying it’s heard from another ECU that there was a problem—and will probably stay cleared once the underlying trouble is fixed.

The remaining two codes, C1425: Open in Stop Switch Circuit and B1785: Front Occupant Classification Sensor LH Collision Detection, are important to diagnose and repair. For B1785, the manual suggests zero point calibration with Techstream first; if that doesn’t work, you’re supposed to replace the front seat adjuster assembly RH, not the occupant detection ECU.

 

B165A/32 occupant detection sensor zone point calibration incomplete.

C1A50 Brake system malfunction.

 

Pay attention to the black arrow.