simoneule2
Peugeot 106 Oxygen Sensor Fault
Summary of the thread
A 2000 Peugeot 106 is experiencing an intermittent check engine light and increased fuel consumption, with an error memory indicating an oxygen sensor fault. The suspected causes include a defective cable or plug. Suggested solutions involve checking the oxygen sensor's resistance and signal voltage, and possibly replacing the sensor, with a recommendation to seek professional diagnostic assessment at a workshop.
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4 comment(s)
simoneule2 (community.author)
I haven't inspected the catalytic converter. Which diagnostic parameter is most relevant for assessing its functionality? I want to rule out any secondary effect before replacing the O2 sensor.
robertknight2
My error code related to the oxygen sensor's signal being out of range. The mechanic said a faulty O2 sensor can mimic catalytic converter problems. Given the age of our cars, it is probably the cable. He suggested testing the sensor's resistance and signal voltage and bringing it to a workshop.
simoneule2 (community.author)
I will get a professional diagnostic assessment at a workshop. I will post the resolution. The oxygen sensor replacement, including labor, cost 95€.
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PEUGEOT
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106
robertknight2
I also own a Peugeot 106 and had similar symptoms. The error codes pointed towards the oxygen sensor, which measures the oxygen in the exhaust. The ECU uses this data to adjust the air-fuel mixture. Did you check the catalytic converter? What kind of error code is it?