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MY ENGINE LIGHT IS ON 05 KIA SPECTRA EX 2.0 ENGINE THE CODE IS P0172 BANK 1 SYSTEM TOO RICH ALREADY REPLACED BOTH OXYGEN SENCORS WHAT COULD IT BE

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Check the ecm fuse its in the fuse box under hood ,it also could a stuck injecter dumping to much fuel

Posted on Jul 31, 2010

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Light check engine obd p0172


Error Code: P0172
Fault Location:
Fuel Trim, System too Rich, Bank 1
Possible Cause:
Evaporation emission (EVAP) canister purge valve.
Fuel pressure.
Fuel Injector(s).
Heated oxygen sensor (HO2S).
Mass air flow sensor.
Engine coolant temperature sensor.
Element air cleaner, clogged.

Dec 08, 2013 | Toyota ECHO Cars & Trucks

1 Answer

I have dodge grand caravan sport the check engine is on the code is P0172 say sistem too reach bank 1


code p0172 refers to system too rich bank 1===causes --intake blocked (air filter) EVAP canister purge valve---fuel pressure---EGR system--injectors--HO2S (oxygen sensor). The first thing to check would be the oxygen sensor and air filter. Then check the fuel pressure in the fuel manifold to check for fuel pump/filter/ pressure relief valve that may be causing an injector fault

Sep 28, 2013 | Cars & Trucks

1 Answer

Solution for code p0172 on kia 2001 magentis


code p0172 refers to system too rich bank 1 probable cause intake b;ocked----EVAP canister purge valve---fuel pressure. EGR system injectors--- and the oxygen sensor HO2S Check for dirty air cleaner first.and then I would replace the oxygen sensor with a genuine unit only as the settings for after market units are not always compatable with the cpu settings.

Mar 09, 2013 | 2004 Hyundai Elantra

1 Answer

Rich fuel mixture banks 1&2


Fuel sensors work in the hottest part of the exhaust and are difficult to remove after a period of time. Many mechanics apply a small amount of never seize to the threads to assist in replacement and future removal. However this affects the grounding of the sensor and can cause fault readings. Ask the mechanic if he did that and follow you idea that the sensors may aftermarket and not suitable for yoyr car

Jan 23, 2013 | 2002 Toyota MR2 Spyder

1 Answer

2002 MR2 fuel system too rich bank 1 and bank 2


Peter. The dealer did diagnose the problem. They said the car needed all 3 oxygen sensors replaced. They were replaced and the car is now returning codes p0172 and p0175 which are the only 2 codes coming up when the check engine light came on. My question is if the dealer sold me the incorrect oxygen sensors could this cause the computer to incorrectly set the p0172 and p0175 rich fuel mixture codes. There are no other codes coming up. My plan at this point is to check and clean the MAF, check my fuel pressure, and also the TPS but I did not want to waste my time if it could possibly be that the new oxygen sensors where the problem. Any help would be appreciated.

Jan 21, 2013 | 2002 Toyota MR2 Spyder

1 Answer

2002 dodge durango 4.7L SLT Plus with lack of power with service engine light on and p0172 error code


error code P0172: system too rich(bank 1)
In my opinion, replace the oxygen sensor.

Dec 13, 2010 | Dodge Durango Cars & Trucks

1 Answer

Speedometer sudenly stoppped working. now works intermittently. also shows check engine light. It is showing p0171 & p0172 codes. Lean and rich. seams like they contradict each other. occasionaly the...


P0171 indicates a lean condition. The most common cause of this is a defective mass air flow sensor. Also check if any vacuum leaks.Replace MAf sensor,if cleaning the MAF does not help.
OBD II P0172 Fuel System Too Rich (Bank 1).P0172 - System Too Rich (Bank 1) Essentially this DTC means that an oxygen sensor in bank 1 detected a rich condition.
When the code says that the Fuel System is "too rich," it means that the computer has been subtracting more and more fuel, which is called Long Term Fuel Trim. Ideally, the Long Term Fuel Trim should be close to 1 to 2 percent. When a code P0172 is set, it means that the Fuel Trim is anywhere from -15 percent to as low as -30 percent compensated. When this happens, the computer knows that there is an improper condition in the control of the Fuel System.


Thanks.

Feb 07, 2010 | 1996 Volvo 850

1 Answer

1996 chevy truck 5.7L has codes P0172, P0172 were


p0172 is--system to rich ( bank 1). an oxygen sensor on bank 1, detected a rich condition ( to little oxygen in exhaust ) v6-v8 - v10 engines, bank 1 is the side of the engine that has # 1 cylinder. causes could be a vacuum leak in a hose, a dirty or bad maf sensor, or fuel pressure or delivery problems.

Oct 29, 2009 | 1996 Chevrolet K1500

1 Answer

Check engine light. got 2 codes P0172 and p0175.


Unclip the 02 harness, then take out the 02 sensor. 5 minute job.

Mar 04, 2009 | 2002 Mercury Sable

2 Answers

P0172 and P0128 Error Code 2003 Trailblazer 4WD


PO172 means that an oxygen sensor in bank 1 detected a rich condition (too little oxygen in the exhaust). I would replace the thermostat first. The computer could be injecting too much fuel because it thinks it never gets to operating temperature. That may keep the light off.

Jan 28, 2009 | 2003 Chevrolet TrailBlazer

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