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Author Topic: o2 sensor heater malfunction  (Read 747 times)

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Squatch

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o2 sensor heater malfunction
« on: 15 January 2009, 10:08:46 »
A couple of days ago the EML light came on. Using the pedal diagnosis revealed 0135 and 0141 - bank 1 O2 sensor heater problem. Seems strange that both would go at the same time? Anybody experienced this?

Cheers!
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Marks DTM Calib

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Re: o2 sensor heater malfunction
« Reply #1 on: 15 January 2009, 13:37:24 »
P0135 O2 Sensor Heater Circuit (Bank 1 Sensor 1)
P0141 O2 Sensor Heater Circuit (Bank 1 Sensor 2)

So we are talking about the drivers side bank.....and both sensor on that front pipe section (mixture and efficiency)

Ok, meaure the voltage between pins 1 (Grey wire) and 2 (Green wire) on the either of the two sensor.

The sensors have a common supply (pin 1 - grey wire) so check the wire for damage......
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Squatch

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Re: o2 sensor heater malfunction
« Reply #2 on: 15 January 2009, 15:36:51 »
Good advice! As they share a common power supply that is a good place to start.
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