Prius (2004-09) :: 2005 - Error Code P0420 / CEL Came On Again?
Just picked up a 2005 with 146k and full Toyota service history, although seems a steering recall was not done. Will run it to the dealer today to check. I need to decide a.s.a.p. if I am keeping the car or not (I know the seller, he will take it back)
Anyway to cut a long story short, two questions.
1) Car had P3190 and P0420 when I got it. Seller reset, drove home and within 5 minutes on the road the CEL was back on. Checked the codes at home and see only a P0420. Much to worry about? Seems this might be big (Cat) or small (O2). Car getting great mileage - 60mpg at 60mph and it seems to be running great. Should I worry or forget about it? Note I am in Florida with no inspections.
Prius (2004-09) :: 2006 - P1121 Error Code Pulled Over
I have a 2006 prius whose check engine light just came on 1 hour ago. I had it diagnosed and it is giving me the p1121 code, or the coolant flow control valve. I checked the coolant level and it was very low. I added fluid, but the CEL is still on. I have to make an 11 hour trip tomorrow.
View 19 RepliesPrius (2004-09) :: Error Code P0852 And C2315 Pulled Over
I took my 2006 in for its 50,000 mile oil change today, and I was told I had the following codes related to the transmission and the park/neutral switch:
P0852 (System: Hybrid Control; shown as "hist," presumably historical)
C2315 (System: Transmission Control; shown as "curr," presumably current)
My car is running fine, and none of the dashboard lights have indicated any problem.
Prius (2004-09) :: 2005 - Getting P0505 Error Code
I have a 2005 Prius with almost 244,000 mile and about a week and a half ago the check engine light came on. I went to an Advanced Auto and had them read the code for me, which came back with a P0505 error code. I have read several things on web that this code is a Idle Air Controller related.
I also have read that this could be to a loose or bad PCV valve, an air leak in the vacuum lines, throttle motor shaft might be binding, or a failed engine ECM.
The car runs and idle just fine, no stalling or a rough idling. The only problem that is obvious is that when the car is warm and I come to a stop or put in park, the motor will not shut off.
Which one of these would cause this to happen? Or could this be due to a MAF sensor that needs cleaned or replaced?
Prius (2004-09) :: 2005 - Inverter Dead / No Error Code?
My 2005 died in the middle of the road a few days go. Was just rolling along fine then suddenly out of a stop light, the car stalled and would no longer go back into P, D, or R while the battery still seemed to be working. So had it towed to the dealership to be checked.
View 5 RepliesPassat (B5) :: Pulled Over Error Code P0741
My cousin's B5 wagon automatic 1.8T ('00) was shaking and vibrating intermittently. I took it down to Autozone and borrowed an OBD2 scanner. This is what it said (only one code, and the CL was off, although it comes on intermittently):
P0741 - Torque Converter Performance or Stuck Off
Golf IV R32 :: Error Code, P0353 Pulled Over
I threw a code and I have it but I am unsure what to do.
The code is P0353
"Ignition Coil C Primary/Secondary Circuit"
I saw that this might be the coil, the wiring or the ground? I had my coils go on my 1.8t Jetta and that was pretty distinct as the car ran like crap.
The car seems to run fine, I have had the code for 2 days. It went off this morning and it came on again this afternoon.
Explorer :: 2000 - Pulled Over Error Code PO172
My daughters 2000 explorer has a PO172 code, tune it up,Replaced filters plugs & wires and rear O2 sensors that were damaged. Has 65 psi on fuel rail. Can not find any vacuum leaks. Not sure maybe injectors are dirty.
Also I replaced MAF, now it idles, But it's a rough Idle,Gets worse in gear. She say's on cold start up she can smell a whiff of gas ..
Prius (2004-09) :: 2005 - P3019 Along With P0A80 Pulled Over
I've a 2005 Prius with ~193,000 miles. It recently started throwing codes P3019 (Battery Block 9 becomes weak) and P0A80 (Replace Hybrid Battery). Codes were pulled with a laptop running Techstream and a mini-VCI cable.
Figuring I had some time, cleared the codes and only drove the Prius for short trips. At first things were OK, but of course the codes reset after a few days, and pretty soon they were permanent. And the car had very little power, battery fan running on high.
Then when slowly accelerating from a traffic light (there is no rapid acceleration in a gimpy Prius), there was a "BANG" noise, really loud. It sounded like someone tossed an M-80 at the car. Pulled over, didn't see any damage, though there was a strong "fireworks" smell like gunpowder outside the car. Started the car, it fired up fine, drove it home.
After a couple more weeks the car refused to start, wouldn't go into "Ready" mode. So finally I took the interior apart and opened up the battery case. Here is what I found (pic attached).
Moral of story - don't drive too far when you get the P0A80.
Golf IV / Jetta IV :: Getting Error Code P0420 Intermittently?
I keep getting the error code P0420. Cat below threshold.
I have replace both the front and rear O2 sensors and we reset the check engine light. While driving through the cycles to reset the sensors for them to be ready for DEQ, the check engine light came on again.
I am about ready to buy the Cat Converter, but it is really expensive and if there are any other things that I can try before replacing the Cat I would like to try that first. Any other issues associated with that code, or should I just replace the Cat Converter as my next step.
Volvo - S40 :: 2001 - Getting Error Code P0128 And P0420?
So i've had this volvo for about 6 months now.I knew when I purchased it that the two codes being thrown were p0128-Engine coolant temperature, and p0420- Cat efficiency Bank 1.Inspecting mechanic said it needed a new cat to clear the p0420....I went ahead replaced the thermostat and changed the coolant to "fix" the p0128, and cleared the codes, I think the jiffy lube state inspector did not notice the that the catalytic converter test was Incomplete when he passed it. Lucky me I guess.
But now I know that I'll probably have to fix before it gets inspected again. Eventually the p0128 came back on, so I went and got a new ECT sensor. Still doesn't clear the p0128. What am i missing? Coolant temperature sits at a 3'oclock position pretty regularly and quickly. Where to start on the p0420 besides understanding its the Pre-cat o2 sensor that is throwing the code, is there anyway that these are related?
GTI 337/20th Anniversary :: 2002 - Way To Fix P0420 Error Code?
I have a 2002 GTI 337, 1.8T and I get the faulty code P0420 insuf.cat flow?? ... it is a way arround it
View 10 RepliesFord F-150 (2004-2008) :: 2005 - Check Engine Light Code P0420 - CAT Threshold Level
Had the check engine light in the 2005 F150 (90,000 miles) come on. Got the code checked and its P0420. I know that has to do with the cat threshold levels etc. so I believe I am looking to replace the o2 sensor, if I am not mistaken.
How hard of a job is this? Ive done a decent amount of engine work and worked in a shop in high school. Just looking to see if that is the right thing to try first, replacing the sensor, before replacing the cat.
Also I know its the right bank, but if I am not mistaken there is a before and after the cat o2 sensor, which do i replace? Both?
Golf IV / Jetta IV :: 2003 - Got Error Code P0420 And P0141?
I just bought a 03 2.0 and ive been trying to fix her back up, she is almost there, just waiting on my first gear getter from diesel geeks and trying to figure out why these codes (p0420 and p0141) keep coming back on. Originally it was just a p0420 code so i took out the upstream sensor and cleaned it, then i took out the backstream and after examining it figured it should be replaced.
I went and bought a new one and replaced it, within the next 2 days the check engine light came back on throwing the original p0420 code along with p0141 this time. So i took out the new down stream 02 sensor and took it back to autozone and they swapped it out with a new one for me free of charge. So i put the newest 02 sensor in and then within 2 days, both codes p0420 & p0141 came back on. Two 02 sensor heating wires being bad i feel is a pretty slim chance. What is possibly the cause for these two codes repeatedly being thrown?
Golf IV / Jetta IV :: Error Code P0420 - Catalyst System Efficiency Below Threshold
On my 2002 (AVH) 2.0L 4cyl Jetta I have a persistent P0420 error code: "Catalyst System Efficiency Below Threshold"
I changed the oil, cleaned the Mass Airflow Sensor, replaced the coolant, thermostat, and coolant temperature sensor. But it's still showing up.
OBDII says it could still be:
A damaged or failed oxygen sensor (HO2S)
Downstream oxygen sensor (HO2S) wiring damaged or connected improperly
Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe
Retarded spark timing
The oxygen sensors in front and behind the converter are reporting too similar of readings
Leaking fuel injector or high fuel pressure
Cylinder misfire Oil contamination
Ford F-150 - 1997-2003 :: Check Engine Light Came On - Error Code P0420
I was driving along today and my Check Engine light came on. I stopped at the nearest Advance Auto to have them pull the code and it came up with the P0420, Catalyst Efficiency Below Threshold (Bank 1). I asked what could cause this and they mentioned that the fuel that was put in could be causing it. They didn't mention any other possible causes. Any others? I'm thinking it could be the fuel because the last gas station that I stopped at and filled up at is one that I never go to, and maybe just got a bad batch of fuel.
View 14 RepliesPrius (2004-09) :: Code P0420 - Diagnosing O2 Voltages And Cat Temperature
I have P0420 on my 06 prius with 220K miles. I reset it and it comes back after roughly 50 miles-ish. I have freeze frame data when the code is thrown. I read live data at 2500 rpm while the car is warm, and have all the data on the video link below.
My upstream O2 voltage is 3.1-3.3V. Downstream is .2-.4V. I understand that the downstream should be steady, and the upstream should fluctuate and read something between .1V-1V.
I have also taken thermal temp gauge and measured across both cats and readings downstream seem to be only slightly higher (+50F). It should be ALOT higher shouldn't it?
Avalon 2005-12 :: CEL Error Code P0440 Error Code / Charcoal Canister Replacement
So of course it has to happen 3 weeks after my warranty expires. My CEL comes on and I have it read and the result is P0440. I find out that my wife has a habit of topping off the gas tank and so I am thinking that she has probably ruined the charcoal canister. It is something easy to replace?
I have an 06 limited edition... Yes, she will not be topping off any gas tank anymore.
Prius (2004-09) :: CEL On / Code P0420 / Catalytic Converter Threshold Below Efficiency
I checked out a 2006 Prius yesterday a guy is selling. It had the CEL on (not sure why somebody would try and sell a car with that, but anyway). He said that it's because they get gas at a station that consistently doesn't tighten the gas cap enough but by the time the tank is down to 1-2 bars the light always goes away. Although I don't doubt his story, I absolutely doubted the cause. So I took it to get the code pulled and it was P0420, which is catalytic converter threshold below efficiency.
View 15 Replies