I get a code P0138 High voltage on banks 1-2. The original o2 sensors were low voltage, now they are to high. WTF?

 

Hm. Interesting... perhaps it really is an ECU version problem and not "faulty" sensors!?

 

That's my question as well. Did you have your ECM reprogrammed when you replaced your O2 sensors, Maximam?

 

The job was done by the dealer under warranty. I hope they did it.

 

I just looked at my service writeup from when my 02 sensor got changed. It includes a ECU reprogram.

bryan

 

My service writer owes me. I'll have to pay him a visit and see what I come up with. I've had my codes pulled at Autozone before and it indeed reported that it was an O2 sensor problem. I'll have my dealership reprogram my ECU and NOT REPLACE O2 SENSOR(S) to see if the problem reappears, or not.

 

I get that as well, except mine is a P0139. Basically, it's because your exhaust isn't switching between rich and lean enough times in a certain period.

I've messed around with my air/fuel ratios, but still can't overcome this issue. I only get it while driving between 2200-2500 RPMs in 6th gear at cruising speeds on a flat road. Go figure.

If you find a solution, let me know. I'm still toying with the air/fuels until one is found.

 

Appointment is set for Friday morning.

 

My SES light decided to show up on Friday night. Saturday morning the dealer just reprogramed the ECU and did not replace the O2 Sensors. I have not see problems since.. (200 miles).

 

Is there a TSB to go with the reprogramming? I'd like to see how the dealer arrived at reprogramming the ECU instead of replacing the O2 sensors.