My engine reads fault code 13, Oxygen sensor no change in voltage, open circuit. Could this be the lambda sensor broken. The engine runs fine, probably defaulting to the set level. The engine management light goes out if you drive rapidly. comes on at lower end RPM. If the CAT was broken would this give this fault.
Nice one. I thought that It was a problem with the sensor. I recently changed the exhaust downpipe. I bought it second hand
and left the Sensor with it in the pipe, because on mine the snap in connector had been cut off and the sensor wires were electrical taped into the loom socket. Hence when I took it off I did'nt know which wires were which, Two white ones!. Therefore I could'nt connect the original one back up. Is there anyway of telling whicch white wire is which so I can connect my old one back up?
Sounds like the best plan. I've probably got a **** connection on the current sensor in my car. If this fails I'll try putting the old one back in, which I know is a good one.
If I swap the white wires around, this won't blow my good sensor?
I'll take a look at the circuit diagrams tonight to see what the white wires do. I think the white wires may be the heater and the black wire is the oxygen sense.
> I bought it second hand and left the Sensor with it in the pipe,
so you have no history of this Os then, get a new one will work i the end of the day, about £60 frm BOSCH or www.autovaux.co.uk, or £120 from VX dealer.
You propably have a 3-wire OS.
2 are the same colur, one is not, proably 2 x white, 1 x black. The black is the signal to the ECU. The 2 white is the +12v and chssis, this is for the heater inside the OS, dosn't matter which way you connect the heater, it will still work.