Hey guys, I'm no newb here, I've dealt with dozens of prius' and I have a problem I cannot figure out. 2006 Prius 200+k miles Symptoms: Triangle light, yellow brake light, (NOT VSC) Codes: p1121, p0420, p1150, p2601. Now, I cleared all these and the only one that has came back after 200 miles is the p0420 emissions code. No big deal right? Well. The triangle light never goes off and I have no indication as to why. The HV batteries all tested great. New 12v battery. And drives great. What I have figured out is that the inverter pump does confirmed work. And that the thermos pump seems to not work, would this cause a consistent triangle ? Any input appreciated.
Also, Forgot to add. In addition to triangle always on, the main screen shows the typical "problem" symbol Top left AND a never before seen battery logo. I have owned 20+ Prius and never seen this before. Will grab a pic
What was used to read those first four codes? It seems most likely you're suffering from a code reader that isn't able to show you the codes that are giving you that triangle light. Getting those read would pave the way forward. -Chap
A digital code reader, capable of logging as well. It has shown previous triangle lights on other cars. Currently has no CEL, just trianlge and yellow brake. And the screen warnings
It can be capable of logging, and still only log the codes it knows how to read. There are on the order of a couple dozen computers in the Prius, and code readers that don't know half of them are even there will not give you adequate information to fix the car. If you're using Techstream, then it's assumed you're seeing all the relevant codes. If you're using anything else, it's kind of on you to make sure it's getting the information you need. Some people make do with something like the ScanGauge II, or Torque on a phone, plus looking through these forums for the necessary programming to make those devices read Prius codes. In your case, it clearly isn't getting you the information you need, if you have a triangle light and the reader isn't showing you the codes causing it to light. That just means another approach to reading the codes will be needed so you'll know what your car is trying to tell you. -Chap
It isn't. and the pump doesn't receive power. Pump works when directly adding power. No clue where to begin striped wire loom back 14" and wires look healthy.
Checked every single fuse under the hood in the main box. Where is fuse for it? I swapped relays also.
Agree with others, you aren't seeing all of the codes due to a limited code reader. I'd get a $20 mini-VCI cable and Techstream and read the codes properly to diagnose. There are many threads on PC and elsewhere on the internet for this cable. Otherwise take it to a dealership.
