Prius (2001-03) :: HVAC Diagnostic Showing 21 Code
Jul 11, 2010
I am on vacation and the AC has stopped working in my '01 Prius. I have run the HVAC diagnostic and it shows the "21" code. The only thing I can find related to this code is the solar sensor fault. I have located the solar sensor on the dash but am not sure how to remove (to replace) it. I have gotten the little black cover off of it but don't know how the rest comes out. Does it just pull out or unscrew or do I have to squeeze some tabs or what?
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I have a 2001 toyota prius with 130k miles on it. 4 days back the triangle of death showed up on the dash board. The car would run fine for 3-4 miles, then brake light (on the dashboard) would turn on.
Sometimes the car would run fine with the brake lights, other times it would really slow down. Turning the car off and then on again gives me another 3-4 miles before the same story repeats again.
This triangle of death used to appear earlier too(6-7 month back), stay for few hours and then magically disappear, but this time I m not so lucky.
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I made three ten mile trips this evening. On the first trip the "engine" light came on. This is the first time I have seen this light (2004 @ 134,000 miles). ScanGauge reports diagnostic code P0505. The "engine" light remained on through all three trips. Also, I was not able to get the ICE to shut down and run only on battery at all, even though the battery was on the upper level of charge and the engine was warm. There were long stretches where I normally run on battery at around 35 mph. I'm supposing there is a connection.
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I had our '04, 149,000 miles in for PA state inspection and emissions test as well as to be looked at because of a P0505 diagnostic code. The symptom of the diagnostic code was that the ICE would not shut at all. The past few months I simply cleared the code (ScanGauge) and things were immediately back to normal until the check engine light came on again.
Anyway, in response to the P0505 today they replaced the air filter (I checked, it is installed correctly), checked for vacuum leaks (all okay) and cleaned the throttle body. My wife picked up the car this afternoon from the repair shop (independent, but mechanic trained by Toyota for Prius). Upon arriving home she said I needed to drive it because it is acting very strange. We drove it this evening and indeed it is acting strange. A number of times the engine revved up to 2800-3000 rpm when my foot was off the gas, e.g. slowing to go around a corner or even when sitting at a traffic light. The SOC was normal (blue bars), not high or low. It was also interesting, because even though the transmission was in D, the car was not pulling to go forward, e.g. at the traffic light-- in D, engine revving, but car just sitting there as though it was idling or ICE off.
The ICE would shut down and go to battery mode appropriately. However I noticed that the mpg would not go about about 110 when backing off the gas going down a long hill at around 50 mph (engine warm, battery normal charge). Normally this would bump it up to around 200.
This latter symptom of mpg not going about 110 is a bit subjective and we only drove around 20 miles this evening, but I know we did not experience the engine revving before the car being serviced today.
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The green lights work on the AC and Max AC buttons. However, when I attempt the ignition on, fan off, press AC button 3x, fan to auto - nothing happens. No light blinking at all.
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I need to get my 2002 Toyota Prius inspected. The Warning/check engine light came on so I ran a diagnostic (OBDII) on it and came up with P3006 Fuel Air Metering Auxillary Emission controls. What does this mean? Previously codes indicating cylinder misfire came up but those cleared.
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My Hyundai Santa Fe 2006 V6 3.5L shows error code P2100. I cannot for the life of me find the ETS relay. Ive scoured the net but just found vague drawings and pics that didn't show ETS relay. I would also like to know is the ETS relay also known as the fail safe relay or is that a separate relay. Ive seen pics of the fail safe relay but none for the ETS relay. If there is such a relay, exactly where it is located?
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I own an '01 Honda Accord LX with the ULEV engine and 178k on it. My CEL light came on about 6 months ago. Ran the scanner and it showed a P1457 (EVAP Leak). Waited until now when my inspection was due and expected it to be caused by the EVAP shut valve as I read that's often the cause of the problem with this code. Mechanic said that it can't pass inspection because of the OBD fail but that the diagnostic scanner showed everything functioning properly, including my assumption about the faulty shut valve.
He reset the code and said to drive it the 50 miles for the system to ready itself and bring it back in. As I've reset the code several times over the 6 months to see if it would self correct, I'm pretty confident it will come back on. My questions are, is it possible I've done damage to the onboard computer by not addressing the underlying problem 6 months ago? Are there emissions problems that are not checked by the diagnostic tool that the mechanic should be looking for?
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My 2005 prius is showing POA93 code. Is this always an inverter coolant pump or can this be caused by other issues?
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Had a company install fog lights on my replacement 2007 Prius I picked up after I totaled my 2008. When i went to pick the car up, the car wouldn't start. Showed the triangle of death and threw a code that the 12v was bad. Probably from having the car off and testing the fog lights continually - resulted in a drained battery. I picked up a brand new yellow top optima battery and thought this would resolve my issues. Nope, once the batter was replaced, the car wouldn't go into Drive or Reverse, only park or neutral. The current code is P0A0D. The shop is baffled. They removed all modified parts and still can't figure out the issue. They are currently replacing the interlock plug in hopes that this will resolve the issue.
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I recently purchased a second-hand Prius T4 (2007 model) and I noticed that the red triangle exclamation was showing on the dashboard. Initially, my local mechanic found a P3000 error code and a B1801 error code.
I ran techstream on it just last night and the main errors that came out were:
Current codes:
Srs airbag B1801 - open circuit in driver side circuit
Air conditioner B1421
Transmission control - C2318
History codes:
HV battery - POA84
I also have just found out that this car was in a major collision in 2012. The air bag light is constantly on, along with the red triangle exclamation, on the dashboard. The fuses for the battery fan kit, horn, and air bag needed replacing (I think all three but definitely two of these).
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I am about 50 miles from El Paso and 350-400 from home, broken down on hwy right now, all the dash lights lit up and my scan gauge says p0a93 the inverter pump thing. Nothing has been worked on or messed with so i should have no air in the lines etc
Can I drive it like this to El Paso or home? Car seems to be running fine. Car is under toyota warranty so i don't want to screw anything else up.
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I can't find a listing for a 511 diagnostic code for my 1994 960.
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I have an issue with my 960 wagon. When I first got the car this past July, the AC light was flashing. I ignored it because I didn't really need the AC. I knew the heat worked fine, which I need up here in the northeast. However, a week ago or so the heat suddenly stopped working. It worked fine in the morning. I parked the car in a lot, came back about five hours later, and no heat.
I found the sheet with the AC diagnostic codes on it, and followed the procedure to get the codes.
[URL]........................
I'm getting the code 132 every time I do the diagnostic, and sometimes I also get 161. Of the three times on three different days I've done the diagnostic, the 161 only came up once.
In-Vehicle Temperature Sensor
Open Circuit Or Short Circuit To 12 Volts .......... 132
Solar Sensor ......................................... 161
I'm not sure where the in-vehicle temperature sensor is. Is it in the dome light? It says the "courtesy light fixture" in the docs, so I'm not sure this is the same thing. The dome light is not currently connected in my car. I have two of them in the garage but neither ever produced light when plugged in, and the heat worked fine all during that time, so I didn't worry about it. It was only until a week ago or so that the heat stopped working.
The temp panel controls work fine. Blower blows as needed, vents switch no problem. Recirculate actuates. No heat.
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My check engine light has been coming on and off and it seems to show P0420 for catalytic converter. The light stays off for about a week and it'll come on for a day or two and off again.
Wouldn't a failed converter stay failed? Can P0420 be triggered by loose/bad gas caps?
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My 2001 F-150 came up with this code and I changed the EGR valve cleared the code and it returned 15 miles later. The truck only has 30K miles and the warranty expired 24 May.
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Once a Gen I battery starts showing signs of dying (overcharging when should be in "sleep' mode, MPH loss, loss of power, etc.), what is the range for how long the battery might go before all the lights go on indicating "now it's really dying"?
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So this morning, I started the car and quickly shifted into "R". Midway out the drive, ~20 yards, the engine stopped and triangle "!". Turn off and restart, no problem and alarm light remains. At a stop light, the Graham miniscanner found P3101; cleared the code, and; it is time for the Spring oil change the throttle body cleaning.
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I just bought a 1997 ford f-150 4x4 with 4.6 motor. the check engine light came on. My diagnostic tool reads code 401 (egr insufficient flow). I've replaced on the parts on the egr side of engine. light still on. could it be a leak in the vacuum lines. I don't see any wear.
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two times i tried to have my 2005 elantra gt scanned for errors, both times the scanner blew. The mechanic followed the instructions and has been doing this for years so there is no doubt he doesnt know what he is doing. The first time came as a surprise but the second time i now feel there is something wrong with my car.
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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?
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