MXsmith Posted July 23, 2011 Report Share Posted July 23, 2011 Hi, I plugged my 1.0 arosa into the laptop last night after my emissions light came on and it came up with these fault codes:PO133 02 Sensor Circuit Slow ResponsePO135 02 Sensor Heater Circuit MalfunctionCan anyone tell me what is broken, Lamda Sensor?Is it an easy job to do yourself or is it best to take it the garage?Thanks, Leo Quote Link to comment Share on other sites More sharing options...
kabman Posted July 24, 2011 Report Share Posted July 24, 2011 The codes are self-expalnatory. You have a failure of the heater circuit. It could be internal, in which case you'll need a replacement sensor, or it could just be a wiring fault. Check the wiring first - you might save yourself some money. Quote Link to comment Share on other sites More sharing options...
MXsmith Posted July 24, 2011 Author Report Share Posted July 24, 2011 The codes are self-expalnatory. You have a failure of the heater circuit. It could be internal, in which case you'll need a replacement sensor, or it could just be a wiring fault. Check the wiring first - you might save yourself some money.Thanks, Where would i find a wiring diagram to see if it is the wires? Quote Link to comment Share on other sites More sharing options...
kabman Posted July 25, 2011 Report Share Posted July 25, 2011 Thanks, Where would i find a wiring diagram to see if it is the wires?ELSAWIN is your best bet. I don't have a diagram but O2 sensors are fairly generic. Has it got 4 or 5 wires? Quote Link to comment Share on other sites More sharing options...
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