vag.com fault code help needed??

[sps]

the car is a 1996 vw golf mark3 1.4 with an aex engine code.its doen 105k miles

i read the codes using vag.com

and it came up with :

00525- O2 Sensor - Voltage Low

00625-vehicle speed sensor.

could someone tell me what these are?

[martin1810]

The codes may not mean anything. Have you cleared them to see if they come back.
The O2 sensor is your lambda probe in the exhaust. Have you got a mil light on. The speed sensor is a speed sensor. This doesn't mean it has a fault.

[sps]

The codes may not mean anything. Have you cleared them to see if they come back.
The O2 sensor is your lambda probe in the exhaust. Have you got a mil light on. The speed sensor is a speed sensor. This doesn't mean it has a fault.

the car tends to cut out sometimes when cornering.

then code 00525 for th lambda sensor says low voltage-does that mean anything.

no mil light on.

i will try to reset all codes to see if they recur.

[martin1810]

The ecu monitors the lambda probe signal to adjust fueling. It is not measuring the voltage as such, but a voltage signal. The signal has to be within "range" so the ecu flags a code if the voltage is too high, too low or shorted to ground. This doesn't have to be a fault because a momentary drop in voltage can occur at any time. Your cut out when cornering may well be the speed sensor. I would replace that and see how you go.