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Im getting codes 172 and 175 on a 96 tahoe i reset it and replaced the coolant sensor the codes are back within 70 miles

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P0172 is system too rich bank 1 and p0175 is for bank 2. this means that you need to test and replace sensors, tps, idle mixture and maf

Posted on Jul 05, 2010

  • lexo123 Sep 23, 2011

    but my car is a expedition 2000 did not pass smog code po175 bank 2



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2006 Buick Rendezvous P0420 Code.

P0420 OBD-II Trouble Code: Catalyst System Efficiency Below Threshold (Bank 1) P0420 code means that either the upstream or downstream oxygen sensor in the catalytic converter is not working. In short your catalyst is worn out.

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How to repair P0125 for 2000 Mercury Mountaineer

P0125 OBD-II Trouble Code Technical Description Insufficient Coolant Temperature For Closed Loop Fuel Control What does that mean? This means that the engine coolant temperature (ECT) sensor indicates that the engine has not reached the required temperature level to enter closed-loop operation within a specified amount of time after starting the engine. Symptoms You will likely not notice any drivability problems. Causes A code P0125 may mean that one or more of the following has happened: Insufficient warm up time Low engine coolant level Leaking or stuck open thermostat Faulty coolant temperature sensor Possible Solutions The simplest thing to do is to reset the code and see if it comes back. If the code comes back, the problem is likely going to be the result of the above causes (faulty thermostat, faulty ECT sensor, or a low coolant level). Other ECT sensor and circuit related DTCs: P0115, P0116, P0117, P0118, P0119, P0128 Register now to ask a question (free) Related P0125 DTC Discussions 1996 chevrolet Caprice p0125 Car start properly but after 5 or 10 minutes driving start doing missing and stop. After that car will not start but 20 minutes it start but again stop, if you just start the care and don?t drive it will start 24 hours with no issue but if you will go for drive than you will stuck in middle of the r... P0125 on a Saturn Sc1 My grandpa's car has a p0125 check engine light on. Tha car will not start and is running rich on fuel. We tried replacing the fuel pump and filter, fuel injectors and even the coolant temp sensor and it didn't work. What else can it be? Here's the code. P0125- closed loop fuel control insufficien... 1997 corolla engine code p0125 Im getting code p0125 in my 1997 corolla and have changed thermostat coolant temp sensor and have topped up coolant level but code keeps reappearing any sugestions would be appreciated.... 2000 4runner P0125B code Engine light came on. Local garage read code as P0125B. Internet search says engine coolant temp. sensor which I will replace. Where is it located on 3.4L engine?... camaro codes p0404 p0505 p1404 p0304 p0122 p0125 Hey I got the codes when I ran my test p0122,p0125,p0304 P0404,p0405,p1404 was wondering what's all that and the price or it better to replace the motor...

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May 18, 2015 | 2000 Mercury Mountaineer

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P0030 2006 tahoe

That code is a heated oxygen sensor failure. The first thing that you need to do is replace the oxygen sensor. They should be replaced every 60 to 70 thousand miles anyway. They might fail sooner if you use fuel system additives.

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1998 been had it since they came out and this is the first time it gives me problem while im driving 70mph in the freeway something in the back gear locks on me where is stops the car from 70 to 0mph can...

The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPEDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM

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1996 corvette didn't pass emissions codes po117 and po300 i just put new engine n tune up what could be wrong now

p0300 is usually a random cylinder miss-fire code, and i think that p0117 is coolant temperature sensor? Try replacing the sensor, could also be the reason for the other code, as a malfunctioning coolant temp sensor will affect engine timing.

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Getting a lean burn error code on banks 1 & 2. reset it and drove 250 miles before it came back on. Reset it again but the code came back within 10 miles. Checked for vacuum leaks, none found, replaced...

Check for vacuum leaks.

Air tube between air filter and intake manifold.

If the motor has over 80,000 miles then the intake manifold gasket can **** in air and leaning out the air/fuel mixture.

Give each air / vacuum relayed hose a 1/8-1/4 turn.

Get a steam cleaning on the motor and check for any sign of leak around the sensors.

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The Toyota Camry engine light is on. Error Code P0125

Change bank 1 sensor 1 this will solve your problem. Tihs is a fuel issue nit a thermostat issue.

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1 Answer

Code P0125 keeps coming up, obd system does not totally reset itself. 3 of 4 system checks do not reset even after many minutes of driving. This on a 98 T100 with 26,000 miles. I have erased the codes...


The p0125 code is an oxygen sensor code, the description will say something like" insufficient coolant temp for closed loop operation" the problem is not the coolant temp sensor, the problem is that the signal from the O2 sensor is not within the parameters that the computer needs to go into a closed loop condition, more than likely replacing the O2 sensor will take care of the problem but only if there is not another problem with the engine such as a misfire, vacuum leak or a mechanical problem, from what you've said this doesn't seem to be the case, so before spending a lot of time diagnosing replace the sensor.


Jun 17, 2009 | 1997 Toyota T100

2 Answers


this is what I would do. I have a 98 saturn sc2 and have been threw this ringer.

1. replace the O2 sensor
2. replace plugs with the bosch platinum 2 spark not 4, and the wires.
3. take the trotle body off - relax 4 bolts. the wost thing is you mite have to buy a new gasket if your not carefull - clean it out really good. with a lint free towel and carb cleaner.
4. buy a product called seafoam.
Go on UTube and look up seafoam its very easey to do. And typically works.
5. also replace your air filter.

6. you may need to replace the thotle body sensor
7. you may also need to replace your tempature control sensor.

Change your oil when all this is done. Take the car out on a interstate or major highway. do at least 60 miles per hour for atleast 30 minutes. Then drive directly to the inspection place. This will also increase your gas milage and performance. I do not take any responsability for anything here. I am not there to diagnose your cars but I can say this is what I would do.

If you have any questions let me know. everything I have told you to do here is very easy and can be done in no time at all. Get a friend to help

Sep 10, 2008 | 1993 Saturn SL2

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