Car has been running like crap when cold from 2k-3k rpm. Took it to get scanned today and below is the codes its throwing.

P0135 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0155 - O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

P0160 - O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0140 - O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

AND ALSO

P0122 - Throttle/Petal Position Sensor/Switch A Circuit Low Input

What should I do to remedy these codes? Please help.
Thank you,
GN

 

I would say replace your TPS sensor on your car, and Change your computer over to one that runs higher voltage. The higher the voltage the hotter the o2 sensors will get. So that would get rid of the other codes. But for the P0160 and p0140 Those are saying that they are not plugged in. " The rear o2 sensors"

 

I am running headers... dont 2 sensors get turned off when you get it tuned? Is that why I'm getting those codes? Isnt it just bout time for new O2s? I do have 82k on the stockers...

As far as the TPS does it matter I had adjusted thru the screw on the TB ?

Thanx for the input......

 

Tps is probably just dropping voltage when cold. That is why it runs like crap when cold. After it warms up it gets a better connection and then fixes itself. As for the rear o2s, Im Sure TXHorns will fix that for you. If not I wont charge you to fix it.

 

ok I replaced the TPS and it helped....but now i got it my head maybe the O2s also need to be replaced....you think?
Ok out of curiosity whats the code for a dead O2?

BTW I will get it re scanned tomorrow and post those up.

Appreciate the help...!

 

The Rear o2 codes you are getting mean they are dead or unplugged.

The front o2 codes you are getting mean they are working but they arent getting hot enough.

If your voltage is 13.4 then that happens due to the headers. If your Voltage is 14.7 then they get hotter and will not throw those codes.

the other alternative is to use rear o2 sensors from a corvette. They have a higher wattage burning element.