No, it's not time to replace your PCM. It's time to properly diagnose and repair the problem. Most Oxygen sensor codes are not the fault of the oxygen sensor. codes P0132 and P0152 mean that both of your upstream O2 sensor circuits are shorted to voltage. It does not mean that the O2 sensors themselves are bad. The code P0300 is a random misfire code. This does not mean change the spark plugs. This means that several or all of the cylinders are misfiring. This could be due to spark plugs, but you will most likely get a single cylinder code (like P0301 or Po302 etc.) if the spark plugs are getting worn out. This random misfire code is most likely being caused by your shorted oxygen sensor circuits. If they are shoted to voltage they will cause your fuel to run extremely lean (vey little fuel) to the point that it is causing the cylinders to misfire. Code P0300 can have seveal different causes, including a fuel pump getting worn out, am manifold vacuum leak, an intemittent crank sensor signal, etc. When other codes are being set at the same time as a P0300, the other codes need to be diagnosed and repaired first.
Hi i have a 2004 pt cruiser my car was doing same thing . It has 234,000 km on it . I replaced spark plugs and dealer downloaded new software on the powertrain module. Guess its different for everyone but it gives you ideas on what to look into. Thank you
I have the same car, I replaced the o2 sensor countless times, untill I got fed up with the problem. I took it to the dealer and found out it was one of my injectors, I went ahead and replaced all the injectors for the same price for the labor. I hope this will help u
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