How to diagnose the following codes: U0D00, P0711, P2300.
U0D00 - What this means.
P0711 - Transmission Fluid Temperature Sensor "A" Circuit Range/Performance. How would I go about fixing this?
P2300 - Ignition Coil "A" Primary Control Circuit Low
While on my 20 mile commute my check engine light turned on, attached the code reader to the car and got codes P0422 and U0D00. Looked up the P0422 code to find "Caralyst efficiency below normal (bank 1)" I have a list of possible fixes but have no luck finding out about the U0D00 code. I notice I lose and a quart of oil every month and when I start the car, the first 5 seconds or so the engine revs to 4000 rpm.
View 1 RepliesEngine light come on and everything is running great, this morning got this error code U0d00. Went to advanced auto and had them run a scan.
View 5 RepliesI got an Error Code of U0D00. What this is or means. The scan tool says to refer to your manual but I don't have one.
What the vehicle is doing is that it will work fine for a while then when you stop (in park) the engine will rev really high and back down all by it self for example. It will go up to 3.5 and back to 1 rpm repeated. Then when you start moving the car it will continue to idle higher like you are pressing the gas. During all of this the check engine light will appear?
We have a 2002 elantra...went to auto zone and they ran the test and came back with code u0d00...but they didn't have an answer for it in there computer..
View 4 RepliesI'm getting codes P0441, P0446, P0456, P0420 and P0430.
My fuel consumption in town is around 12 mpg, so a bit higher than what others report. The cats were removed because they were in bad condition. I suspect excess fuel was sent to the cats. That would also explain the bad mpg ?
2003 Prius. Situation as follows:
Malfunction Indicator Lamp lit on start-up during sub-freezing weather for failure to start (P3191 and P3101 codes loaded). Occurred twice (so far).
Dealer diagnosed as possible fuel pump problem, though fuel pressure nominal and held pressure after engine shut-off.
Independent mechanic (using EG011-03) diagnosed following:
Diagnosis codes: P3191 (engine does not start) and P3101 with information code 205.
Circuit opening relay was fine.
Fuel Pressure was normal (~45 psig) and held after engine shut off.
Coolant temperature - 9 deg C
Engine RPM - 1200
MG1 Torque value - 0
Installed ECU Part Number - 89661-47053, calibration # 14705301, 14705302
EG011-03 decision tree leads to replace Engine Control Module with newer part number.
Took back to dealer, who indicated still possible fuel pump problem (and reluctant to replace ECM).
I recently replaced my engine water pump at 164,000 miles on my 2007 Prius, the car sat for 3 weeks while waiting to gather needed parts, i.e., water pump, coolant and Airlift system for adding coolant fluid. After installing the new water pump the car ran rough for 5-10 minutes upon initial crank (parked for 3-weeks). I took a 20 minute test drive around the neighborhood that evening, outside temperature around 65 degrees F, and car ran fine. SOC looked ok, bars moving between Blue and Green, everything appeared normal.
The next morning, I backed out of my driveway and the Red Triangle of Death appeared on the dash so I parked the car.
That evening I hooked up OBDII ELM327 scanner using Engine Link and picked up 2 separate P0A80 error codes, 1 of them was pending. I disconnected the Aux battery for 3-5 mins to clear the error's, Red Triangle of Death was cleared, then drove the Prius for 20 minutes with no errors or alarms. SOC seemed to be normal. OBDII ELM327 scanner showed the HV batteries were charging at same level, 16.8V and Aux battery was registering at 14.0 Volts.
The next morning, after 20 minutes of driving the Red Triangle of Death appeared, and shortly after I experienced loss of power, with sporadic engine idle and interior traction battery fan was on. Luckily I had made it to work and was able to pull into a vacant parking lot.
I did notice that around the time the Red Triangle of death came on this morning the SOC dropped quickly to 1 Purple bar and was slow to charge then shortly after came the loss of power and sporadic engine idle followed by interior battery fan.
My '02 Elantra would have a hard time starting up in the winter right after I filled the gas to full. Usually I would have to give it some gas to startup. After that, it didn't have problems starting up until I filled it again. This was only in the winter.
About a month and a half ago, it became really slow to accelerate. Since the O2 sensor light had been on constantly for a long time I never bothered to check it. Soon the car became really slow to accelerate and would lunge forward in spurts. The error codes I got were P0133 and the O2 sensor. I replaced the spark plugs and the spark plug wires, and this seemed to do the trick. The check engine light went away, the car sped up nice and quick. Also at that time, I put in some fuel injector cleaner.
The a couple weeks ago, P0133 and P0420 came back. It seems like the car is using up more gas than it should. There is a very minimal sluggish response when I push the gas. I have a spare ignition coil, but trying to find what it could be more specifically before I swap out more parts willy nilly.
Recently my 2011 Elantra GLS with ~32k miles started acting weird. The ECO light would only come on intermittently, and the ECU had a pending code stored (P0711).
Last weekend on the way back from a trip to Austin, the ECO light just stopped coming on completely. The next day the "check engine" light lit up. I also noticed the transmission was shifting harshly.
P0711 is a fault with the transmission temperature sensor circuit.
Took it into the dealer yesterday, they said it's a known issue and there's a Technical Service Bulletin ( TSB ) on it. They replaced the transmission temperature sensor and wiring harness for it. They also updated the ECU firmware to the most recent version. All under warranty, so cost to me is $0.00
If see the P0711 code and/or check engine light, just have the dealership take care of it.
I successfully replaced the HV battery on my own and it was so easy even this girl to do it! I drove the car about 300 miles when I got the triangle of death warning light again yesterday. I took my 2002 Prius to the dealer to read the codes but how to borrow a scanner (or whatever) from Autozone and do it myself.
View 19 RepliesNeed to diagnose a problem with my 2001 Prius. I was driving it on the highway when suddenly the hybrid system warning light and the main battery light, along with the check engine light came on. I pulled over, turned off the car, and turned it back on. The main battery light error cleared but the Hybrid System warning light stayed on as did the check engine light.
I took my car into the dealership and they told me that the 12V battery was probably low at some point but that they didn't find any problems.
The error codes that came up were: C1215, C1241, C1259, C1521, C1522, C1558, and C1559.
I need assitance on the following diagnostic report. My prius shows:-
1. Red triangle with exclamation mark,
2. On the LCD red car with exclamation mark,
3. ABS sign - on and off.
I just bought a used 2008 Prius. I had my Prius inspected after buying it, and the error code C1378 appeared, which I have discerned refers to the Skid Control ECU.
There is apparently a recall for this part in 2010-2014 models, however as a 2008 I don't think I apply.
Don't know know the cause of this message. From what I've been able to find, it sounds like a serpentine belt.
View 13 RepliesI just had a ton of maintenance done on my 2003 Elantra. Spark plugs & wires, timing belt, drive belts, water pump, replaced coolant and replaced the transmission fluid. The spark plugs are NGK platinum as recommended in my handbook. As soon as the mechanic started the car after the tuneup, the engine light came on with a cam shaft sensor code. He said it went off on its own.
The engine light came back on when I started the car. There's also a major loss of power after coming to a stop. I have to floor it to get it to go anywhere above 20 mph after a stop.
The mechanic said that when he replaced my water pump the liquid splashed all over everything and he thinks he might have gotten something wet that shouldn't have gotten wet and that all will be fine after it dries.
I actually just bought a used 2004 Prius with 207,011 miles on it from out of state. I had a car shipped to me by a flatbed trailer. I just got the car the last weekend. However, It has a yellow engine light and a big red triangle with an exclamation mark (!) on a dashboard, and a red car with ! on top left of a display screen.
I drove it to a DMV to get it registered and took it to Pep Boys near my place since I have to get it an emission inspection within 10 days of registration anyways.
They ran a diagnostic test and found 2 current error codes (C2310-open/short in battery circuit & C2318-low voltage error) and 1 history code (P0A80-hybrid battery pack needs replaced), so they didn’t perform the inspection; otherwise, it would have a failed record). They told me that the car has had problems before and the problems are about a hybrid transaxle and a hybrid battery pack. They also told me that I need to visit a Toyota dealer to get them fixed in order to pass the inspection, and they warned me that is going to cost me a large four digit probably . So, they suggested me to just trade it in because it is not worth repairing. They also told me that a dealer who sold me the car probably would have done something to the car, that’s why it didn’t illuminate any warning lights before.
I tried to gather as much information as I could, so I asked the shipper if he noticed any warning lights but he didn’t think so; one thing he noticed was the hybrid battery isn’t charged because the engine started every time he moved the car.
I plan to take a car to another auto shop near my place as well in order to have them double check the issues and give me a repair estimate before taking a long trip to Toyota dealer.
Bunch of warning lights appeared and the dealer said it's code P0a80 and they recommend replacing the battery. I'd like to try to fix this myself and would like to hear your thoughts...
Plan is to check the traction battery for corrosion and use a voltmeter to test the cells and replace if needed. Prius 2004, 158,000.
For about two months I've been having a backfire problem but only when I get on it. We checked for leaks and nothing . The car had 11 codes and were all short to ground. Mechanic is saying my ecu is going out and I need a new one. Is it possible?
View 8 RepliesI am currently about 1700 miles into what is a, planned, 11,000 mile road trip up to Alaska and back to SC. The first three days of driving everything was fine and I was getting 33 MPG. Today my MPG dropped down to 28 and in the evening my check engine light came on. The folks at PepBoys told me it was P0139 which I understand has to do with oxygen sensors and would affect my vehicle gas consumption.
If I drive about 21 hrs (Denver to Portland OR) to get to a place where I have a trusted mechanic and more free time, will it be bad for the car/engine?
Driving: Elantra GLS, 2003. Around 53k miles on it. Just replaced the tires last week as well as all belts (including timing). A few years ago I recall a similar error and my mechanic had me take the car to a muffler shop to cut something out and reweld it. yeah, I have forgotten the details.
I replaced the purge valve a while back, i just replaced the ccv and gas cap. The light is still on. Could a bad Ftps cause both those codes? Do i possibly have cracked/bad lines?
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