Yunoos Ginwalla Posted on Jan 29, 2014

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Error Code P0172

Stall when acclerate

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Toyota Master 20,706 Answers
Posted on Feb 01, 2014

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THE 02 sensors is stuck lean. at 0v. the ECU
goes max rich in this case. (compensates) 173 means ECU slammed rich due to 02 reading gross lean.
lots of causes.:
1: a bad 02 , say stuck at 0volts. ( over 100k miles they can to that)
2: exhaust leaks{cracks} near 02. and stuck at 0volts
3: dead or weak, or dirty MAF, causing illegal unmetered air. lean.
4: intake air system has gross air leak.

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1answer

Hi. I went to autozone and diagnosed with code p0172 on my 2005 Lexus GX470. I have vsc trac, vsc off, anti skid, and check engine light on. The lights come on for about 100 miles and goes off for same...

P0172 LEXUS - System Too Rich Bank 1
Possible causes
Faulty front heated oxygen sensor
Ignition misfiring
Faulty fuel injectors
Exhaust gas leaks
Incorrect fuel pressure
Faulty Mass Air Flow (MAF) sensor
https://www.autocodes.com/p0172_lexus.html

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Mar 13, 2018 • Lexus Cars & Trucks

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1answer

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.

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Dec 08, 2013 • Toyota ECHO Cars & Trucks

0helpful

1answer

P0172...both banks running rich

This link may help you out.http://www.engine-codes.com/P0172.html

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Mar 17, 2013 • 2003 Ford Taurus

0helpful

1answer

After changing the oxygen sensor, air filter , air flow pump and using fuel injector oil on my car (golf gti 1.8l 4 cylinders the error code is changed from p0172 to p0171) can somebody tell me how t

Here's a guide,Code P0171 is fuel system too lean and code P0172 is fuel system to rich.

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Dec 17, 2012 • Cars & Trucks

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1answer

Having accleration issues mostly going up hills. Just replaced fuel filter.

The knock sensor is famous for causing all sorts of trouble If you have a code for it, it probably needs to be replaced.

It could be a faulty sensor, valve or blockage in the EGR (tube) from a carbon buildup.

in some cases it may be a problem with the ecu

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Jun 11, 2012 • 2004 Infiniti QX4

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1answer

I have a few error codes for my 2004 dodge ram hemi 1500 4x4. they are po172, po300, and po304.

The p0172 is due to an O2 sensor in the exhaust seeing too much oxygen, the po300 is a missfire present and p0304 is cylinder #4 missfire, check plug and wire to #4 and repair, this should also take care of the p0172, if a cylinder is missing it is just pump air into the exhaust thus causing the code p0172.

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Jan 13, 2012 • Cars & Trucks

0helpful

2answers

Car skips and I have 2 codes showing up po172 and po174, can anyone help ?

These are 02 sensor codes Check for vacuum leaks. also check the vent solenoid on the EVAP system. This can stick open and cause a vacuum leaks.
Let me know Randy

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Apr 26, 2011 • Ford Taurus Cars & Trucks

3helpful

2answers

I HAVE A 2001 CAVALIER AND THE CHECK ENGINE LIGHT IS ON AND I AM GETTING 3 CODE READINGS PO172 PO300 PO300 WHEN TAKING OFF FROM A LIGHT THE CAR HESITATES AND AT LIKE IT IS GOING TO STALL ALSO IT IS RUNNING...

The P0172 code is a rich code most likely caused by the P0300. The P0300 is a random/multiple cylinder misfire code. Replace the plugs and wires.

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Jan 29, 2011 • 2001 Chevrolet Cavalier

1helpful

1answer

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.

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Dec 13, 2010 • Dodge Durango Cars & Trucks

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1answer

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.

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Feb 07, 2010 • 1996 Volvo 850

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1999 RAV4

Cars & Trucks

Hi. I went to autozone and diagnosed with code p0172 on my 2005 Lexus GX470. I have vsc trac, vsc off, anti skid, and check engine light on. The lights come on for about 100 miles and goes off for same...

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Error Code P0172

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Related Questions:

Hi. I went to autozone and diagnosed with code p0172 on my 2005 Lexus GX470. I have vsc trac, vsc off, anti skid, and check engine light on. The lights come on for about 100 miles and goes off for same...

Light check engine obd p0172

P0172...both banks running rich

After changing the oxygen sensor, air filter , air flow pump and using fuel injector oil on my car (golf gti 1.8l 4 cylinders the error code is changed from p0172 to p0171) can somebody tell me how t

Having accleration issues mostly going up hills. Just replaced fuel filter.

I have a few error codes for my 2004 dodge ram hemi 1500 4x4. they are po172, po300, and po304.

Car skips and I have 2 codes showing up po172 and po174, can anyone help ?

I HAVE A 2001 CAVALIER AND THE CHECK ENGINE LIGHT IS ON AND I AM GETTING 3 CODE READINGS PO172 PO300 PO300 WHEN TAKING OFF FROM A LIGHT THE CAR HESITATES AND AT LIKE IT IS GOING TO STALL ALSO IT IS RUNNING...

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

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...

Not finding what you are looking for?

1999 RAV4

Hi. I went to autozone and diagnosed with code p0172 on my 2005 Lexus GX470. I have vsc trac, vsc off, anti skid, and check engine light on. The lights come on for about 100 miles and goes off for same...

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Thomas Perkins

ROBERT GARCIA

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Error Code P0172

1 Answer

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Related Questions:

Hi. I went to autozone and diagnosed with code p0172 on my 2005 Lexus GX470. I have vsc trac, vsc off, anti skid, and check engine light on. The lights come on for about 100 miles and goes off for same...

Light check engine obd p0172

P0172...both banks running rich

After changing the oxygen sensor, air filter , air flow pump and using fuel injector oil on my car (golf gti 1.8l 4 cylinders the error code is changed from p0172 to p0171) can somebody tell me how t

Having accleration issues mostly going up hills. Just replaced fuel filter.

I have a few error codes for my 2004 dodge ram hemi 1500 4x4. they are po172, po300, and po304.

Car skips and I have 2 codes showing up po172 and po174, can anyone help ?

I HAVE A 2001 CAVALIER AND THE CHECK ENGINE LIGHT IS ON AND I AM GETTING 3 CODE READINGS PO172 PO300 PO300 WHEN TAKING OFF FROM A LIGHT THE CAR HESITATES AND AT LIKE IT IS GOING TO STALL ALSO IT IS RUNNING...

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

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...

Not finding what you are looking for?

1999 RAV4

Hi. I went to autozone and diagnosed with code p0172 on my 2005 Lexus GX470. I have vsc trac, vsc off, anti skid, and check engine light on. The lights come on for about 100 miles and goes off for same...

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