Hello My 04 Prius has not been driven for 2-3 months and I am not sure what my issues are. I have 102775 ODO mileage I am getting on dash RED Triangle Yellow, VSC, and Brake ((I)) SG2 scan C1286,C1186,B0656, and PID00 Any suggest and help will be appreciated
Maybe the aux 12volt battery is depleted and limping along just enough to light up the dash warnings? 2-3 months is a long dormancy for this battery. Can you trickle charge the battery over night to make sure its up to snuff?
That is a start ....................I am able to drive though,start......so my 14V Optima yellow top is working...........and had already swap aux battery out..... My SG2 SOC% is 62 to 50 I am not sure how you which system is failing OEM HV pack, transaxle, inverter...... all the DTC codes I get are not pending and do not correspond to the code sheet......
I do not think a ScanGauge is capable of reading brake system codes. Try dumping the blink codes instead. You need to jumper pins 4 and 13 of the DLC. Each lamp will flash out a 2 digit code for DTCs. Then, you can try to reset them by pumping the brake pedal 8 times in 5 seconds. See attached.
I have had the DTC codes P1886 P0A86 PF186 PID00 c1286 SG2 scans like 80 some odd codes with none go to pending status after I hit next on SG2 only get a code which has correlation. I may go to a mechanic and have him hook up his OBD diag..... I can drive but I am in a ev mode longer than usual and I can see the battery SOC 50% which is a drop that can not be good...... I may also try swap of the oem HV pack to see if that clears my issue then I will know I a bad pack..... I am not sure how to jump those obd pins and I assume you mean clear codes by dump..... I really not sure what you directing me toward .like use alligator clip test leads...
http://priuschat.com/forums/gen-ii-...0-miles-hybrid-battery-replacement-story.html In my forum search I found this nice person thread........ He is far more eloquent and about my trouble(issue) and seem to mirror what he describes ...Additionally the life cycle of the HV pack is about ten year give or take. I am 2nd hand car owner so who or whom knows car history status
Have you noticed a pattern in your codes? Most are **86, and there are no codes ending in 86 that map to a DTC in the service manual. If you go see your mechanic, print out the attachment and take it with you. All you need is a 2 inch piece of insulated wire with the ends stripped to make the connection between 4 and 13 -- literally a breadboard jumper can do it. Brake/ABS/((!)) codes are heavily proprietary and only advanced level scan tools will have the Toyota programming to read them. Fortunately, Toyota left a mechanism for manually reading the codes via the jumper + lamp flashes, which is more than I can say about some other auto makers. There is nothing at all abnormal about the SoC values that you report, 50-62. I have seen two cases now where SoC would fall as low as 30%, and the HV battery was NOT at fault.
FYI If I am correct this the third inverter pump and the inverter was rebuilt once. When you drive in all ev(startup) real nice even though dash is like xmas tree lights......... inverter pump is not cycling at shut off I think the rear brakes may be gone too I gotta check that and is there a sensor near rear drums MFD battery bars have cycled too from half , to all green, then half I could recheck pack volts What brand multimeter gives a good read? After attached jumper wire from 4 to 13 what is next or should be doing or looking for,,,
Look into a Prius specific OB2 reader to see HV Battery module pair voltages and other diagnostic info. The ScanGauge2 (with recent firmware) programmed with xGauges can help as can a Bluetooth OBD2 dongle and a Android pad/phone running Torque (https://play.google.com/store/apps/details?id=org.prowl.torque&hl=en). JeffD
The hallmark of a battery failure is two-fold: The cooling fan in the back switches to high, and it makes a very noticeable noise at the intake in the back seat area; the car will not go in reverse.
All but the red triangle warning "cleared" today just by me driving vehicle and SOC has gone to 63% I may be in the clear...so no VSC yellow or brake
