Code p0032; Replaced O2 and MAF; Still have CEL and Rough idle

Hello everyone,

2004 Tacoma PreRunner V6 3.4L 2WD 230,000 Miles

So after getting my CEL code ran I received a p0032 code a couple weeks ago. Yesterday I replaced my my bank 1 O2 sensor with a Danso and I am still having very rough and shaky idles and an almost on/off stalling feeling at almost every stop. The bank 2 was replaced within the last 20-30,000 miles as well. The engine just seems overall very weak.

I have also replaced the MAF in the past two weeks. Since I was just getting by with cleaning it every now and then with MAF cleaner for quite some time, I figured this was best anyway.

At times I also still have issues getting the engine to turn over at times as well.

Anyways, I continue to receive the CEL after battery disconnect reset and the idles are only getting worse. I am just wondering what my best course of action could be for next steps?

Could it be the ECM itself? Should I check my grounds? The TPS? Fuses?

All of the above? Any insight at all is greatly appreciated.

 

The code P0032 references the heater circuit in the O2 sensor. If the replacement sensor is correct this code should have cleared unless there is an additional underlying problem.

any further diagnosis should start with a compression test. If the motor is not mechanically sound no amount of parts installed will fix it.

 

Turn your headlights, disconnect the battery and clear DTCs once more. I am betting that a capacitor or two may not be draining. Its a guess and might work.