The car is an iron block 408 with literally EVERY performance mod you can have. It's been running great for the past couple of years. No flaws at all. But started recently throwing the P1111, 1133 and P0134 code. I changed the o2's. And hooked up HP Tuners to data log. For the most part the car seems to be fine. But, it's such a radical set up I just may not be able to hear or notice anything. Can anyone help.



Charlie

 

Anybody....????

 

p1111 - Intake Air Temperature Sensor Circuit Intermittent High Voltage

You have checked the IAT circuit?

p1133 - Insufficient Switching Bank 1 Sensor 1
p1134 - Transition Time Ratio Bank 1 Sensor 1

Have you checked the ground pin in the connector to the chassis to make sure there is a good ground and you don't see any voltage on it? Also, have you checked the same connector to make sure you have the correct high and low voltage signal? Have you checked the same connector to see that it has the correct heater voltage?

 

I pulled the IAT connector and sensor and cleaned both. As for the grounds on the o2's. Where are those grounds.? What color wire is the ground on the o2 connector.

Oh and thanks by the way for helping me with this. I have been on the VETTE FORUM for three weeks and NO RESPONCE from any of the more then 2 million Vette owners. So I think you again.

 

intermittent high voltage means either the sensor is going bad, or you have a short somewhere in the 2 wires and it is adding 12v somehow to the line. It could just be a small pinch somewhere. As for the others, it is just saying you have 1 bad drivers side front o2 sensor.

 

On the o2:

Black is the ground
Pink is 12V for the O2 heater
Purple is 12V for the High signal
Tan is 3V for the Low signal

Sounds like a bad sensor.

But don't rule out the fact that you have a Corvette and the C5 is notorious for corrosion at connectors and ground locations. Make sure you check the harness connection at the computer while you are at it.