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What dose po172 mean

All lights came on check e, abs, ect cleared code has not re surfaced? Any thoughts maybe spark plugs or o2s

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P0172 code. Check Engine light on. Vehicle will not start now


What make and model car ? P0172 OBD II Trouble Code could be running so rich that it fouled the sparks . Pull out the spark plugs and see if there are wet with fuel and black, means that they are fouled out. Have to be cleaned or replaced . I don't know the make of vehicle , so I can only give approximation what mite have caused this , a fuel pressure regulator with a ruptured diaphragm leaking fuel into the intake manifold, leaking fuel injectors P0172 System Too Rich Bank 1

Dec 20, 2014 | Cars & Trucks

1 Answer

Trouble code PO172


Code 172 means the fuel mix is too rich on bank one. If you have a 6 cyl engine there is only one bank of cylinders. The problem could be the O2 sensor or a leaking injector among other things.

Jan 21, 2014 | 1996 Jeep Cherokee

3 Answers

1995 S-10 Blazer- service engine light is on?


Po172 refers to an oxygen sensor. But after you service the part you need to clear the code with an OBD II scanner. You can get a reliable inexpensive one at Harbor Freight. After you clear the code then you to start the car and drive it to see if the code comes back on. Also if you have a vacuum leak this can cause the system to run either rich or lean depending on circumstances.

Nov 17, 2013 | Chevrolet Blazer Cars & Trucks

1 Answer

Code po172 on a acura rxs 2002 how can it be fixed


try use a code scanner to clear the code p0172,
maybe this tool can help you.

Jun 11, 2012 | 2002 Acura RSX

2 Answers

I repleaced all 4 abs sensor on my 1996 toyota avalon, but the abs light still on, what could be the problem?


abs light on means some fault codes stored in your car,
toyota it2 can help you clear the code and turn off the light with airbag.

May 16, 2012 | 1996 Toyota Avalon

1 Answer

I have an 04 cavalier. Code P0172 mechanic changed upstream 02 senor. light came back on. Brought back to mechanic he changed the downstream, light came back on. I changed fuel filter, spark plugs, oil...


Think your guy changed O2 Sensors ,
but didn't consider that your sensors PO172
is rich,because it is correcting for a lean condition


I'am going to really guess here

The EVAP has leaks,but no codes set,
partially driving the system lean (Vacuum Leaks)

The Converter is sort of out there as
not working well either

I would smoke the EVAP System and everything else,
intake manifold etc

I think you will find this by MAYBE even just looking
for a bad hose leak

Is that data from your mechanics scanner ?
What is their theory ?

Bank 1 has a vacuum leak I think !! ??

Mar 19, 2011 | Chevrolet Cavalier Cars & Trucks

1 Answer

1996 es300 trouble code po172 and misfireing on all cylinders


Whats going on here is that you have a too rich fuel air mixture. This will cause your misfiring and set off the PO172 Code. Your Bank 1 O2 Sensor is picking up the too rich mixture. This O2 sensor is location on the #1 Cylinder side (so you problem could be in #1/#3/#5 Cylinder). A dirty MAF Sensor, loose plug wire, dirty/broken spark plug, dirty fuel injectors, vacuum leak, and PCV Valve could all be a cause. I would run some injector cleaner through and also clean the MAF Sensor, change your PCV Valve. This would be an easy and cheap start for you. Good luck and thanks for using FixYa!

Sincerely,
JC

Dec 28, 2008 | 2000 Lexus ES 300

2 Answers

Service Engine Light


have u checked/ replaced your o2 sensors since you have owned the vehicle?

Jul 22, 2008 | 1996 GMC Yukon

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