2001 Prius P3030 P3009 Transmission issue

You probably know that DTC P3030 is supposed to mean a broken traction battery sense wire. How did you confirm that each wire is sound? Did you use an ohmmeter to measure each wire?

P3009 indicates a ground fault which could be caused by any component in contact with high voltage including the transaxle.

The incorrect tire size would not provoke these particular issues.

If the car does not demonstrate driveability issues, then I suppose you could just drive it "as-is", until something else happens.

 

P3030: I don't see how it could.

P3009: Yes, happens often.

They have probably been letting it sit. You could assemble the car by hand in less time.

Given that the folks at your particular dealership seem to be lost on this issue, it's hard to know if the results of their testing are relevant. You might want to keep that in mind.

Which code sets first? How quickly does each code return? Are the codes intermittent? Has the dealership carried out any insulation testing on the system? These are starting points.

None that relate to your codes.

 

You're about 60 miles away from Taylor Automotive in Sanford NC, home of Re-InVolt. You might get a second opinion if the car could be driven there. Sometimes, a second set of independent eyes can see a problem from a new perspective.

Bob Wilson

 

Interesting, one of the Japanese owners reported a problem with corroded pins in the sense wire plug and connector. But replacing them twice . . . this really doesn't sound right.

Bob Wilson