I have a p1174 code on my wifes G6. Changed out the front O2 sensor, cleared the code and it re-appeared. I did notice a crack in the exhaust manifold when doing the sensor change out. Could this be the cause? Also I had installed a brand new out of the box (so I didn't oil it) K&N air filter. Did the K&N throw off the O2 sensors. Thanks
I replaced all 4 O2 sensors on my 2009 GMC Sierra 1500 SLE, Changed oil, Changed spark plugs and wires, put a can of seafoam in the tank and im still getting P1174 and P1175
Ok i Will try to give you some help here P1174 and P1175 codes refer to the O2 sensor runs lean. things that can cause the fault code could be a misfire in the cylinders. With that said i find it is caused by a fouled spark plug or bad wire connection or even a clogged fuel injector. In some instances it could be low fuel pressure, dirty fuel or dirty fuel filter. If it happens frequently it is possible that the gas station where you fill up has just got a fuel delivery and that stirs up the sentiment in the bottom of the tank and you pump it into your tank and that can clog things up ad you drive causing your misfires. Run a good fuel system cleaner through the lines to break up the dirt, i would say put it in the tank with about 1/2 a tank and then drive it 50-60 miles before putting in another bottle and filling the tank. you may want to replace the plugs if it does not clear up. I hope this helps
Crack could cause o2 sensor to read inccorect and light to come on..
SOURCE: How to clean O2 sensor on a 2007 Pontiac G6?
O2 sensor are located before and after Catalytic Converter ( exhaust system of your car). If you car's engine is 4 cyl you have 2 O2 sensors and if you car's engine is 6 cyl then you have 4 O2 sensors ( for each bank, 2 for left bank and 2 for right bank). Hope it helps and comment if you need more advice. Please don't forget to rate the answer it helps with my ratings, thanks!
SOURCE: o2 sensor location 1997 pontiac grand am 2.4 4 cyl auto trans
BANK 1 SENSOR 1 IS THE ONE IN THE EXHAUST MANIFOLD. BANK 2 SENSOR 2 IS BELOW THE CATALYTIC CONVERTER.
P0171 SHOULD GO AWAY WITH A GOOD O2 SENSOR BUT DO CHECK FOR VACUUM LEAKS TO BE SURE. 3.1/3.4L ENGINES HAVE A BAD DESIGN INTAKE MANIFOLD GASKET, THE LEAK OIL, COOLANT, AND AIR.
SOURCE: Pontiac Bonneville 2003 oil pressure 120/// and maf sensor code
Replace oil pressure sensor. What is the code?
SOURCE: 2000 Pontiac sunfire 2.2 got code 1137. How do I
The 1137 OBD2 code is typically an o2 sensor problem as you have indicated, first I would make sure your replacing the correct o2 sensor as there are two (upstream and downstream), although it is possible that a bad o2 sensor could keep your engines fuel injection system from delivering the fuel to your engine, in my experience having a bad sensor typically results in a check engine light and running with a less than optimum fuel air mixture, it does not typically keep your vehicle from starting. If your still getting the 1137 error code after replace the o2 sensor and checking its connecting wires I would start looking for a bigger issue.
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The motor is the 2.4li. four banger. I found the manifold/cat. for 320 but I don't want to change unless it really fixes the problem.
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