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CODES PO456 AND PO431 ANY QUICK FIX HERE

Codes PO456 and PO431 any quick fix here

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bschilz
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SOURCE: CODES PO456 AND PO431 ANY QUICK FIX HERE

Quick fix? No... you probably knew that already.

A code P0431 may mean that one or more of the following has happened:
The catalytic converter is no longer functioning properly
An oxygen sensor is not reading (functioning) properly
There is an exhaust leak

Solution:
Inspect for exhaust leaks. Next step is to measure the voltage at the oxygen sensor on Bank 2. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.

One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.

Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:

A small leak in any of the EVAP hoses or fuel tank hoses
A small leak in the purge valve or vent valve
The EVAP Canister may be leaking

Solution:
First, using a scan tool activate the vent solenoid, sealing the system. Then monitor the fuel tank pressure (FTP) sensor. If the system is sealing properly, the number will stay consistent. If is isn't, the pressure sensor will show that as well. If the system slowly leaks, use a smoke machine and watch for smoke exiting the system at any EVAP component. Any where there is smoke exiting the system, that is the faulty component. Do not pressurize the EVAP system with air pressure. Doing so can damage the purge and vent solenoids in the system.

Posted on Mar 25, 2010

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I've a warning message on my dial VSC


The vsc is the vehicle stability control, I aides in even brake distribution and steering controls. Is that the only light on the the dashboard.? Or it the the check engine light on as well. If so you can try this its a quick fix so you can drive it to the deleted or a shop to get the codes read. Disconnect the positive and negative battery cables for at least 10 mins I like to leave them off for an hour or two just to make sure. Then reconnect them and start your car. This clears the pcm of all fault codes until it malfunctions again. But like I said it's a quick fix to get it to a shop. Hope this helps

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Want pass emissions without po431 or po442 getting fixed


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Code 1283


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I can start the car but stalls out as quick as it starts i have many codes 5 miss fires 3 idle speed


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Trying to find out which pins to cross for engine codes and the location on 1995 isuzu pickup


Hello ipontrees40: My name is Roger and I will help with your answer. Locate the ECM on the left kick panel. There will be a lead of wires that has 3 leads hanging. Connect the white and black wires together. Turn the key on and observe the check engine light. Should flash i sequeince of 12, will flash once pause followed by two quick flashes. This is code 12. Any codes after the 12 will be stored codes. Be sure not to start the engine when checking the codes. Should you start the engine you may not receive the correct information. The codes will be read as slow flash followed by a long pause followed by quick flashes. For examle a code 42 would be 4 slow flashes followed by 2 quick flashes. After the computer has read all storer codes it will go back to code 12. After you repair the problem you can clear the codes by either removing the negative battery cable or #3 fuse for ten seconds. Remember just because there is a code does not mean that part is bad. You need to follow basic trouble shooting to make a propper repair. Just replacing parts becomes expensive. I attatched a picture of the jumper wires to the computer to help in identifying them .
Should you need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Rogerrogerf1_52.jpg

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Hello, i have a 2002 chrysler PT cruiser and it gives the error codes P1684 and P0700, the car is automatic and only goes on gears reverse and first. It does not shift up when driving. What can i do to fix...


It is very possible that the transmission is going out. Need a little more clarification on what the codes mean that are coming up.You can go to Autozone and they can bring up the codes, and then they will tell you what those codes mean. It doesnt cost anything and could possibly be a cheap, quick, and easy fix.

Mar 26, 2011 | Chrysler PT Cruiser Cars & Trucks

2 Answers

CODES PO456 AND PO431 ANY QUICK FIX HERE


Quick fix? No... you probably knew that already.

A code P0431 may mean that one or more of the following has happened:
The catalytic converter is no longer functioning properly
An oxygen sensor is not reading (functioning) properly
There is an exhaust leak

Solution:
Inspect for exhaust leaks. Next step is to measure the voltage at the oxygen sensor on Bank 2. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.

One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.

Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:

A small leak in any of the EVAP hoses or fuel tank hoses
A small leak in the purge valve or vent valve
The EVAP Canister may be leaking

Solution:
First, using a scan tool activate the vent solenoid, sealing the system. Then monitor the fuel tank pressure (FTP) sensor. If the system is sealing properly, the number will stay consistent. If is isn't, the pressure sensor will show that as well. If the system slowly leaks, use a smoke machine and watch for smoke exiting the system at any EVAP component. Any where there is smoke exiting the system, that is the faulty component. Do not pressurize the EVAP system with air pressure. Doing so can damage the purge and vent solenoids in the system.

Mar 25, 2010 | 2004 Mitsubishi Montero

1 Answer

Codes P1130, P1131 Fuel Air metering and P0171 system lean (bank 1). When i release pressure on the gas pedal there is a knock knock. is this a quick fix


Sounds like your mass air flow sensor. It measures the amount of air going to the throttle body and the injectors should spray the rquired amount, so the computer thinks there isn't much air therfore it runs lean,,, sending the po171 code. Can be a quick fix.Get the part and change it in the parking lot.

Nov 29, 2009 | 1998 Mercury Mystique

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