alpinab7

O2 sensor heater is getting voltage. When the wire from the ecu to the sensor is grounded, I get .46v. Could it be anything other than the O2 sensor? Mine is only about 6,000 miles old. I have a new one coming but was wondering if there is anything else that could cause the reading of 1.00 like high or low fuel pressure, etc. Any ideas?

Uwe@Ross-Tech.com

What Group/Field is it that's stuck at 1.00?

-Uwe-

alpinab7

under measuring blocks: 001 in the box that says "Lambda Control" the reading is 1.00 and doesn't move

Uwe@Ross-Tech.com

"A display that remains fixed at the average value 1.00 indicates the following:
Electrical malfunction in HO2S control system
1 - Open circuit
2 - Short circuit
3 - Sensor probe malfunctioning
4 - Control module malfunctioning
Insufficient heating of HO2S probe"

This is for the third field in Group 1.

More details at the link below.

-Uwe-<ul><li><a href="http://www.bentleypublishers.com/product.htm?code=ayc4">http://www.bentleypublishers.com/product.htm?code=ayc4</a</li></ul>

alpinab7

I havea new O2 to install, so I hope that is it. My old O2 is just 1 year/ 4000 miles old.