Prius (2004-09) :: Error U0293 - Lost Communication With HV ECU
Nov 8, 2013
HV battery problem. I have Prius from 2007. In The car occur na error U0293 - Lost communication with Hv ecu.
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Nov 8, 2013
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Touareg :: 2004 V6 - Fault Code U0121 / Lost Communication With ABS Module
I have an 04 V6, yesterday it was perfectly fine...last night we had torrential down pours, high winds and standing water... not sure if any of that matters, but this morning I went to take the kids to school and my "BRAKE" light, the ABS light, and the exhaust lights were all on. Took it to a local shop and had them check for codes. They said it was U0121... lost communication with ABS module. What should I do? I drove it a couple of miles back to the house and again earlier this evening to see if anything felt different, but all seems the same.
View 2 RepliesPrius (2010-12) :: Error Code B1498 - A/C Communication Malfunction
Bought my 2010 Prius with some issues, most of which are now fixed.
The remaining issue is the mentioned A/C error code: B1498 A/C Communication malfunction (A/C inverter local)
What part this is, and the OEM part number? Where is it located in the car?
Previous owner claimed it was some error with the A/C Control unit.
Ford F-150 (2004-2008) :: OBDII Not Reading Code - Communication Error?
What would make the OBD II not read the code that is set on my truck. It says "Communication Error..." Fuse 41 grants power to the Diagnostics port and the cigarette lighter. The cigarette lighter is working. Any other reasons I can look at?
View 3 RepliesPrius (2004-09) :: Scanner Found Code U0293
Scanner found u0293,,,recommended reseal power inverter. what I have read for two days says its Power source ECU.. What happened,,,kids was driving car, had 3 phones plugged in, ac, lights, and when she tried to set cruise, car went into limp mode, gear lights flashing,,,went into neutral,,,stop beside highway,,had to be towed.
12 volt battery charged and tested ok. no blown fuses. I reset ECU by jumping pins 14 and 4. no change, tried master reset by holding brake and power button down, no change..removed ecu fuse to reset, no change.
Ford 6.7L Power Stroke Diesel :: No Crank / Lost Communication To PCM
So my 6.7 left me hanging the other day, went to start nothing. Towed it into town started. Went to start it couple days later nothing. Jump the plug by right battery starter turns. When key is turned to run no glow plug light, no fuel pump prime. Tested ignition switch good. Tried 2 new Batteries nothing. got power on fuse 52, continuity from fuse 52 to pcm connector. Fuse 49 and 50 also have power. Took all 3 connectors at pcm out and blowed air through and sprayed W.D nothing. Even tried with connector on transmission. Scan tool will not communicate with pcm.
Codes after cleared:
instrument cluster:
uo100 lost communication to pcm
u300a-64 ignition switch...
transmission:
u0294 lost communication with pcm
Body control module:
u0100-87 lost communication with pcm
B10f1-14 key in switch short to ground or open
Ford 7.3L Power Stroke (1999-2003) :: IDM Codes P01668 Communication Error
Truck wont start idm communication error all the fuses are good and the relay seams good I switched it out with another relay 340,000 miles how do I know if its the IDM r not... I'm sure the idm is not cheap...
View 2 RepliesPrius (2004-09) :: Water Damage To Communication Wiring From Faulty Windshield?
I have a 2004 Prius CVT-E with 160,000 miles. It gave me the check engine lights and after I drove it for a mile, it ran out of power and wouldn't accelerate, though it kept starting. After towing it to the dealer, they said there was a "loss of communication with ECMs and RCM junction connector for J18 for communication line due to water damaged from windshield leaking and shorting connector and junction block."
There was also water damage to the carpet and headliner assembly (it was raining that day). They said that the windshield must've been installed improperly at some point, but I don't remember ever having to replace the windshield.
So is it possible that they can tell that the windshield was different from the original, and any problems with original windshields?
Prius (Gen 2) :: Diagnostic Codes P0420 And U0293
Looked around and could not find info on 2 codes. 2004 Prius : P0420 and U0293. One I believe is lost communication with hybrid system. Are these serious?
View 3 RepliesPrius C :: Won't Shift Out Of Park - Getting Code U0293 On Scangauge
I was successfully able to install my Prius backup camera, but a few hours later I found that I could not shift out park. I was getting code U0293 on my scangauge. I can push the override button next to the shifter to shift out of park, but I can't figure out whats going on.
View 6 RepliesPrius (Gen 2) :: Control Module Communication Bus Off - Code U0073
This is a 2008 Prius with no check engine light or other operational issues. The car runs fine. When doing a health check with a Techstream scanner (new toy), it shows the code U0073 along with U0123, 124, 126, and 293. Need to further diagnose what may be wrong?
View 7 RepliesPrius (Gen 1) :: HV Battery Dead - Code P3106 / Communication Malfunction
Against my better judgement I picked up the ex wifes 2001 Prius after the "mechanic" she took it to ran the HV battery dead. I picked up two Gen II batteries and built me a good battery. Then I cleaned all the corrosion off the harness and terminals and put the HV battery back in. The engine spins but dies. There are no engine codes but under the HV ECU cattegory I get a {P3106 communication malfunction, engine > HV}. I had a spare HV ECU and swapped it and get the same code. Spare engine ECU and the same code also. Not sure where to go from here. How to check voltages at the ECM ?
View 10 RepliesPrius (2004-09) :: Red Triangle / CEL On And Lost Power While Driving
I have 2005 Prius with 110k. Yesterday, red triangle and check engine light came on and I lost power while driving...SCARY. Took it by dealership. They called this am and said it needed a new HV-ECU and that would cost $800. The error codes they gave me were P0A78 and P0A94. Anything else I should ask them to look at? I'm wondering if the HV ECU is something I could buy used and install myself? I'm not a mechanic but am comfortable with most DIY projects.
View 10 RepliesPrius (2004-09) :: 2005 - Lost Power On Interstate
So am i the only 200,000 miles prius owner on here? I have an 05 toyota prius, purchased with 44 miles on it. I now have 218k miles. All I've replaced was an o2 sensor and a few other minor things. But it died last thursday, had it towed to my house, still don't know the extent of the issues. I had the following codes P1116, P1121, P3193. I was driving on the interstate and all the warning lights came on and i lost power as i got over. Jumps would only allow me to turn my lights on and dashboard, but the engine doesn't start.
View 4 RepliesPrius (2004-09) :: Car Lost Power, All Sorts Of Warning Lights Came On
My Prius is 07 with 146k in southern California, for two days every morning I took a short trip to a store then when driving back home the prius battery lost bars fast and I lost power with all sorts of warning lights. Then I drive off with no problems for the entire day. I disconnected the aux battery and that reset the Error codes, I checked the inverter pump and works properly, I checked the aux battery and shows 12v when off and 13.9v -14v when on. This happens every morning so I suspect it's the aux battery. 3months ago my dash lights went out and rebooted the car with no problems.
View 5 RepliesPrius (2004-09) :: Warning Lights Came On, Lost Engine Power
199k on my prius. I'm driving 65 mph and bam! All warning lights come on, PROBLEM, comes up on the mfd, and the mfd had a funky little broken cat symbol light in the top left corner.
I lose engine power and coast to a stop. As I'm coasting the speed display stops showing my speed... even though the rest of the gouges are lit on the display. While parked I realize I have very little 12v battery juice....
With a jumper pack on the front terminals I get the cat home. I ser on the display the my hv battery is stuck at one bar.
At home I charge the 12v battery and get the hv battery fully charged by holding the gas down in drive with foot on the brake. My Toyota mechanic told me to do that. All warning lights go away. I leave a jumper pack on the battery in the rear and take for another test drive. Car is better but still sluggish... Try to get it up to 50 mph and bam! again all warning lights return.
So I get the car to toyota dealer and and my guy reads the codes and tells me every ecu is showing codes abs recommends 12v battery replacement. He clears the codes. So I buy a brand new battery and after installing it all warning lights return on test ride. Car won't do over 50 mph and is def still a mess.....
Prius (2004-09) :: Lost All Acceleration While Driving At Highway Speed
Lost all acceleration yesterday while driving at highway speed. Tire pressure light came on also large warning sigh and check engine . Had been stuck in bumper to bumper traffic before this with AC on.Gas pedal to the floor but no acceleration. I pulled over and shut off car. When I tried to restart the lights mentioned above went out Except the check engine, NOW all the brake warning lights are on in a yellow color including the emergency brake.Brakes do stop the car (had to push it onto the tow truck) Car comes on but does not display the READY sign.
View 7 RepliesPrius (2004-09) :: Red Triangle Came On Dash And Lost All Driving Functions
I was at an intersection and red triangle came on dash and lost all driving functions. Had to turn power off, then turn back on. Was able to drive 100 yards to a parking spot, but it went out again. Reset car again, then it happened 4 more times within 2 miles while driving. Had to call tow truck. Just kept shutting itself down. How to fix this. See picture below for the message I got when it happened. This is the first time my car has malfunctioned like this. I think maybe its throwing itself into park or neutral (judging by the P-lock message below) and cuts all throttle control to car. Has 105,000 miles on it.
View 19 RepliesPrius (2004-09) :: Engine Straining / Lost Power And Poor MPG
Basically, about 3 weeks ago I noticed some problems with my 04 Prius. It has 72k miles on the clock. The exhaust was making a farting sound. I have since diagnosed this as a hole in the back box which I promptly replaced. But the real problem is the power.
When driving in electric mode, the car runs as normal. But when I press down on the gas just a little more to the point where the ICE kicks in, it doesn't give as much power as it used to. For example, in electric mode, cruising at 30mph and achieving 99.9mpg, I'd press the pedal down about half an inch. Where this used to kick the ICE in and show 60mpg+ (with the engine charging the battery and providing power to the wheels), it now shows about 30mpg. When I press the pedal a further half inch, it would normally show 35-45mpg, but now reads 16-25mpg. And when its fully depressed, it used to show 12-16mpg but now barely hits double figures and averages about 6.7mpg. Even on highways when I've achieved 60mph and gently ease off the pedal to maintain speed or really slowly increase, I used to achieve 60-70mpg but now I'd be lucky if it makes it to 40.
I also noticed that it produces considerably less pulling power than it used to. Almost as if the engine is really struggling, even when gently pressing the pedal and accelerating from 30mph upwards. This is having a large effect on my overall fuel consumption. I get so scared that I'm wasting too much fuel that I drive really conservatively now.
Prius (2004-09) :: Suddenly The Car Lost Power Entirely - Slips Into Neutral?
I have a 2008 Prius with about 95,000 miles. It is bloody cold here. About 4 degrees F when I got up. On the way to work, on the parkway, suddenly the car lost power entirely. Just started to slow down. No reaction when I pressed on the gas pedal. I didn't notice any warning lights. I flipped the gear shift to Drive, and the car accelerated again. About five minutes later, this repeated. For the rest of the trip it was fine, and there were no problems coming home. (Temperatures were still way below freezing in the afternoon when I left work though the car had been sitting in the sun. I don't know if this could be cold-related, but it's never happened before and it hasn't been this cold here for days on end before._
View 2 RepliesPrius (2004-09) :: Lost Red Button From Keyless Entry Remote
I noticed today that the red (panic) button cover is lost from my keyless entry (silver Toyota logo) Gen II 2008 remote.
What I basically need is a broken remote, essentially just that red rubber cover.