1996 960 lambda light

[Martinmaltas]

Hi, I have just bought a 960 24v. On the way home, the lambda light came on after 100 miles, I've checked the code and it said low reading on bank 1. Any help would be appreciated.

[93Regina]

960...low reading on bank 1.

P0172 System too rich Bank 1???

The oxygen sensor is positioned in the exhaust pipe and can detect rich and lean mixtures. The mechanism in most sensors involves a chemical reaction that generates a voltage (see the patents below for details). The engine's computer looks at the voltage to determine if the mixture is rich or lean, and adjusts the amount of fuel entering the engine accordingly.

The reason why the engine needs the oxygen sensor is because the amount of oxygen that the engine can pull in depends on all sorts of things, such as the altitude, the temperature of the air, the temperature of the engine, the barometric pressure, the load on the engine, etc.

When the oxygen sensor fails, the computer can no longer sense the air/fuel ratio, so it ends up guessing. Your car performs poorly and uses more fuel than it needs to.

[Martinmaltas]

Thanks, turned off the light and it hasn't come back on yet, so may have just been a glitch.