O2 sensor problem - fault codes?

[Legion1978]

Hi all, my mk1 Leon 1.6 2004 has had the engine check light on since I bought it, thought I'd try to sort it.....suspected o2 sensor was replaced and codes cleared, sadly the engine light came back on almost immediately but with different codes??

If anyone can give me a clue what to do next? I would very much appreciate it!

Original codes
17604 P1196 O2 Sensor Heater Circ.,Bank1-Sensor1 Electrical Malfunction
17588 P1180 Linear 02 Sensor / Pump Current Short to B+
17589 P1181 Linear 02 Sensor / Reference Voltage Open Circuit

New sensor fitted

17524 P1116 O2 Sensor Heater Circ.,Bank1-Sensor1 Open
17591 P1183 Linear 02 Sensor / Reference Voltage Short to B+

 

[Lisa407]

Hi
I'm having similar problems
Members said to replace sensors with genuine ngk for seat ibiza and to check all wiring as one code means a wiring fault.
Sensors can be tested for voltage but not an easy job to diagnose and understand the voltage readings
I had a free emissions test which suggested broken sensor
The mechanic who replaced my back sensor didn't plug car into diagnostic machine didn't erase the code and then the next day I had a diagnostic test somewhere else which said front sensor wiring and ht leads sparkplug codes
Internet gives many possibilities for sensor code problems
I'm sure the members on here will give you answer they have good knowledge

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