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Check engine with code p0445 and po422 - H3 Hummer Cars & Trucks

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

j_del
  • 1586 Answers

SOURCE: 1999 vw jetta 2.0

Sounds like two problems. P0300 and P0303 are possibly spark plugs. They could be a coil pack but I'm leaning toward a spark plug problem because of the other two codes - they're indicating O2 sensor problems. If the O2 sensors are screwed up, the car reverts to preprogrammed, rich fuel maps that send excessive fuel through the engine. The reasoning is, if the ECU can't trust the O2 sensors to determine how much fuel to burn optimally, it'll pump a bunch of extra fuel through the engine to keep it safe. Having too little fuel (aka running lean) can destroy an engine, so the ECU plays it safe and runs rich (too much fuel) instead. The consequences of rich running are relatively minor compared to lean running, but can and do tend to create excessive carbon buildup on the catalytic converter and O2 sensors, as well as fouling spark plugs.

First thing to do though is to swap the wires on your coil packs and see if you end up with a misfire code for the same cylinder #3. If you do, then it's the plug or wire. If it moves, it's the coilpack. Replace whichever part is faulty. You'll probably need oxygen sensors too, before you can clear all the codes.

Posted on Sep 02, 2008

  • 1 Answer

SOURCE: check engine light on an isuzu trooper

have a 1999 3.0td trooper. Diesel fuel in coolant and overheating. Suspected problem with head so replaced with new head and gasket set. Timing appears correct.Fuel appears to be flowing. Engine will not start..turns over..no nasty noises...appears to have compression...any ideas please??

Posted on Sep 10, 2009

  • 264 Answers

SOURCE: how to fix check engine from showing po422 code

The PO442 code is for a "small" leak in the EVAP system. A good starting point is to make sure your gas cap is on tight. When you install it always turn it till you hear and feel the cap click. You should also look at the top of filler neck where the cap tightens down to if its rusted or cracked this will set the code. Check the sealing rig on the gas cap also make sure its not cracked or split. If nothing is obvious there you will want to look at the vacuum lines around the gas tank you will be looking for loose lines or cracks in them. Good luck these leaks are sometimes hard to fine with all the spacial equipment they tell us it takes.

Posted on Aug 30, 2010

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gaz188
  • 90 Answers

SOURCE: getting a PO422 code on

i think it means that the catalyst converter needs either cleaning or replacing because it's not working properly because it's either blocked up or damaged. not sure which side is bank one though. the check engine light may come on for many reasons. first of all check oil level and condition of oil if it's alright the easiest thing to do is check the book that came with the car and see exactly what reasons the engine light comes on for.

Posted on Mar 14, 2011

no_signal_sw
  • 273 Answers

SOURCE: I have 6 cyl 03

The catalytic converter is no longer functioning properly
An oxygen sensor is not reading (functioning) properly
There is an exhaust leak

Sometimes simply resetting the code is all you need to do. Many codes will reset themselves over time. What the person meant was that in normal driving the code may reset itself. You don't need to waste your time or fuel driving nowhere to attempt to reset the code.

Personally, here is what I would do if I were you. If the place in Texas where you are moving to does not require emissions testing, do nothing for now. If the car seems to be running normally the code may reset itself. If Texas requires emissions testing you will need to have the problem addressed or the car will not pass emissions. Bring the car to a reputable independent mechanic for repairs. If it is your catylitic converter expect some sticker shock as these can be expensive. Hope this helps, Please rate this!!! :) James Booth

Posted on May 23, 2011

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1 Answer

My 2001 Hyundai Elantra is dying alot the engine light codes are p0720, p0105, p0445


code P105 is manifold absolute pressure barometric pressure circuit. code P0445 evaporative emission system purge control valve circuit shorted. code PO720 AT output speed sensor circuit open or short ground.HAVE MANY CODES COULD BE ECM FAILING HAVE DEALERSHIP CHECK OUT ECM.ECM COULD HAVE SHORT OUT PC BOARD.

Mar 12, 2013 | 2001 Hyundai Elantra

1 Answer

Po422 trouble code for 2001 dodge ram


There is a leak some where , check the lines where they have rubber on them check for cracks, the dodge is known for broken rubber boots on the end off plastic lines going to purge valve, the other problem is the top of the tank, the ring that holds pump unit in tank may have a leak.

The best way is to smoke test the system for leaks. and last is the filler neck rusts out and may have small hole

Oct 06, 2012 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Getting a PO422 code on my 1999 hyundai elantra the code says main catalyst sufficiency below threshold on bank # 1 and the check engine light is on.


i think it means that the catalyst converter needs either cleaning or replacing because it's not working properly because it's either blocked up or damaged. not sure which side is bank one though. the check engine light may come on for many reasons. first of all check oil level and condition of oil if it's alright the easiest thing to do is check the book that came with the car and see exactly what reasons the engine light comes on for.

Mar 14, 2011 | Hyundai Elantra Cars & Trucks

1 Answer

Looking at a 2000 hyundia accent but has a check engine light code of po447 is this a big problem


Research revealed no data availabe for code P0447 - doesn't exist for Hyundai Accent.

There are codes P0446 and P0445, but nothing with P0447.

Feb 06, 2011 | Hyundai Motor 1998 Accent

2 Answers

Hello i have a GTI its a 2.0L manual transmission, i have been having problem after problem thus far. Current engine codes PO422, PO300,PO304,PO303,PO302. I do not have a code list to see what these are...


I think that PO422 is the Cat Converter, it may be bad or may be just the O2 sensor.
The PO300, 302, 303, 304 code have to do with the ignition coils or wires. (302, 303, 304 means there are ignition /firing problems in cylinders 2, 3and 4). If your lucky just the wire and new spark plugs.
Google "engine codes Jetta" for more on web. Good luck.

Feb 06, 2011 | Volkswagen GTI Cars & Trucks

1 Answer

Code, p0442 p0445


P0442 - Evaporative Emission Control System Leak Detected (small leak)

This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code P0442 most likely means one or more of the following has happened:
* A loose or improperly affixed gas cap
* A non-conforming gas cap (i.e. not factory/original brand)
* A small leak/hole in a fuel vapor hose/tube
* Other small leak in EVAP system
* Faulty vent o-ring seal

Possible Solutions: with a P0442, the most common repair is to:
* Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
* Otherwise, replace the gas cap, or
* Inspect the EVAP system for cuts/holes in tubes/hoses



P0445 - Evaporative Emission Control System Purge Control Valve Circuit Shorted.
Possible Solutions: with a P0445, the most common repair is to:
* Bad or loss contact wires
* Check harnesses, replace it


Hope helps (remember to rate this).

Nov 05, 2010 | 1999 Jeep Cherokee

1 Answer

PO422 PO466


u can try to unplug batt. for a few mins,if it doesnt work, erase with scanner.but if problem causing code is not fix light will come back on!

Mar 23, 2009 | 2000 Kia Sephia

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