P0171+ P0120+ P1130

Hey All!

Anyone have any idea why I might've gotten all three codes at once?

I just recently replaced the 02 sensor on my 3.4L V6 1st gen tacoma.

P1130 came back shortly after replacing it. Although I just got fuel and the rest of the codes popped up.

Can't figure this one out. Any help is deeply appreciated. Cheers.

 

Was it the upstream sensor or down stream sensor?

P0171 is the upstream (A/F) sensor.
P01130 is also for the Bank 1 Sensor 1 (A/F) Sensor.

The P0120 is the TPS on the Throttle Body

Let us know what sensor it was you replaced.
As the O2 sensor is the Downstream sensor.

Upstream = BEFORE the converter
Downstream, is AFTER the converter.

 

Are the parts you installed factory parts or ?

 

I replaced the upstream sensor if I remember correctly. I also since then had my break master cylinder and booster replaced at Toyota. I saw a video of someone saying one of the codes could be due to the seal on those.

It was an aftermarket sensor. Although I dont think the sensor is the issue.

 

I would be suspicious of the new aftermarket sensor if the same code persisted…Toyotas are notoriously finicky with aftermarket sensors. The p0171 could relate to that as well or possibly a vacuum leak related to the other new parts (booster, master cylinder) installed. I would check closely for any leaks in that area, or if it’s still under warranty for the install I would have them do it.