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03 cavalier code p0172 - 2003 Chevrolet Cavalier

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Posted on Jan 02, 2017

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aaangie220
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SOURCE: Code P0172 - 03 2.2 Cavalier

ASE Mechanic:
well a P0172 is a rich condition. meaning too much fuel entering the exhaust. a bad wire, plug, stuck open fuel injector, and or a bad fuel pressure regulator could be the problems. Just have to start testing each one.

Posted on Jan 27, 2009

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SOURCE: car wont start, got code p0172, got fuel, spark

PCM detect an excessively rich condition

Posted on Jan 22, 2010

ryanlutton
  • 1142 Answers

SOURCE: 03 trailblazer 4.2 l code p0172 has no power

P0172 02 sensor is detecting that the system is running too rich. An 02 sensor that is starting to go out will pull this code, but the following will cause the 02 sensor to throw this code as well:

A few things to look at. 1st thing I'd do is clean your throttle body with the battery disconnected. Use sensor safe throttle body cleaner, about $4.

From there, I'd look at your upstream 02 sensor, located on the exhaust manifold on passenger side of engine, very easy. Try and stay away from Bosch if possible.

New fuel filter, clean or replace your MAF sensor located on top of engine next to firewall. Also, probably time to change your spark plugs. I recommend A/C Delco 41-103, will idle better than other brands.

Posted on Jun 20, 2011

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6 Answers

P0171 and p0172 codes


the following links explain the codes and practical and a procedural way of doing so as to not through parts at problem
http://www.obd-codes.com/p0171 http://www.obd-codes.com/p0172

Jul 07, 2016 | 2004 Chevrolet Chevrolet TrailBlazer LS

1 Answer

I HAVE A P0172 CODE ON 1998 CAVALIER 2.4L WHERE IS IT LOCATED


Definition of Diagnostic Trouble Code P0172 Category: Powertrain Definition: System Too Rich Bank 1Note: This definition of P0172 is applied to all manufacturers

Jul 08, 2015 | Cars & Trucks

1 Answer

03 dodge with code172


"172" is not a valid Diagnostic Test Code (DTC) for any 2003 Dodge.
If you mean "P0172" then that means that the O2 sensor has detected a RICH condition. Your engine is getting too much fuel. This could be caused by MANY different things, but the most likely cause is a bad mass air flow sensor.

Dec 21, 2011 | Dodge Cars & Trucks

1 Answer

03 trailblazer 4.2 l code p0172 has no power


P0172 02 sensor is detecting that the system is running too rich. An 02 sensor that is starting to go out will pull this code, but the following will cause the 02 sensor to throw this code as well:

A few things to look at. 1st thing I'd do is clean your throttle body with the battery disconnected. Use sensor safe throttle body cleaner, about $4.

From there, I'd look at your upstream 02 sensor, located on the exhaust manifold on passenger side of engine, very easy. Try and stay away from Bosch if possible.

New fuel filter, clean or replace your MAF sensor located on top of engine next to firewall. Also, probably time to change your spark plugs. I recommend A/C Delco 41-103, will idle better than other brands.

Jun 20, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

I recently purchased a 2002 cavalier z24 with 100,000 miles on it. I recently noticed a gas leak, so i just had the fuel pressure regulator changed. Today the check engine came light came on with two...


To much gas going thru the exhaust. probably the #2 miss fire. Before you change plugs, make sure you have fire to cylinder #2. You could have a bad coil or ignition module. Also check the condition of the plug wire. You can change these if you like , but it may not be necessary.

Jan 31, 2011 | 2002 Chevrolet Cavalier Coupe

1 Answer

Is there any recalls on the gas tanks of the 2006 cobalts cause my tank is leaking at the top


Fuel Sys, Driveability, Filters (Air & Fuel)
2006 CHEVROLET COBALT


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Jul 12, 2010 | 2006 Chevrolet Cobalt

1 Answer

Car wont start, got code p0172, got fuel, spark


PCM detect an excessively rich condition

Oct 19, 2009 | 1998 Chevrolet Cavalier

2 Answers

Code P0172 - 03 2.2 Cavalier


ASE Mechanic:
well a P0172 is a rich condition. meaning too much fuel entering the exhaust. a bad wire, plug, stuck open fuel injector, and or a bad fuel pressure regulator could be the problems. Just have to start testing each one.

Jan 19, 2009 | 1998 Chevrolet Cavalier

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