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Author Topic: Oxygen sensor fault  (Read 7130 times)

Offline jimmy-s3

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Oxygen sensor fault
« on: January 25, 2011, 10:23:15 pm »
Anyone had one of these? What are the symptoms?
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Offline dnLcal

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Re: Oxygen sensor fault
« Reply #1 on: January 25, 2011, 11:46:29 pm »
Generally poor performance, over or under fueling and possibly an engine management light.

Cal
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Offline jimmy-s3

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Re: Oxygen sensor fault
« Reply #2 on: January 26, 2011, 05:09:13 pm »
Ive had an engine management light  come on. Had a cheap daignositc plugged in and the faults were;

Evap system,

Heater control, HO2 sensor bank1 secondry sensor.

Cleared the fault yesterday, drove the car again today and the eml light came back on! The faults this time was again Heater Control, HO2 sensor.

Anyone had this fault?

Im wondering if this is causing the car to chug when pulling away from cold?
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Offline ennvee

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Re: Oxygen sensor fault
« Reply #3 on: January 26, 2011, 10:52:22 pm »
Is this in relation to your ongoing miss fire problem?

I had a similar issue with my old 1.4   it would chug away when puling away when cold.  I had the sensor replaces and had the exact same issues about a year later but nothing came up on the diagnostics.  I would have the ECU reset now and then and it seemed to make things good for a months and the issue was back again.  I got fed up and sold it!  :happy2:
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Offline ub7rm

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Re: Oxygen sensor fault
« Reply #4 on: February 03, 2011, 08:24:39 pm »
I had a faulty o2 senor on my last car and it was running so rich there was a stink of petrol, it was hesitant and low on power and the revs were all over the place at idle.  I'd say its very likely it was the cause of your miss fire.
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Offline jimmy-s3

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Re: Oxygen sensor fault
« Reply #5 on: February 03, 2011, 08:52:44 pm »
Found out why the o2 sensor flagged up!

Checked under the car and one of the wires to the sensor had got caught on something and snapped! The cars pretty low, so its my fault really!

Anyway, repaired the wire and and cleared the fault. Touch wood its been ok since!
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