O2 sensor voltages ?

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O2 sensor voltages ?

Postby jp928 » Mon Jan 01, 2018 12:12 pm

Mate has an 07 H6 spec b 6mt, that keeps bringing up code P0420, cat efficiency low. To try to choose between O2 sensor problem or cat problem, is there a way to read O2 sensor voltages via ODB2 ? Cant find any docs that indicate the V are available or not. One garage reckoned probably a bad tank of fuel, but it has come up 3 times lately. Current plan is to get at the connectors and clean them with Deoxit in case its that simple.
thanks
jp 08 gtb 6mt wagon
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Re: O2 sensor voltages ?

Postby Surge » Mon Jan 01, 2018 7:02 pm

Yes a basic obd2 Bluetooth or wifi unit plus something like the Torque app on android will give o2 sensor readings.
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Re: O2 sensor voltages ?

Postby jp928 » Mon Jan 01, 2018 10:16 pm

Thanks. Have an Ultragauge, so will see if that can find the values. Are they called 'readings' or 'volts' or similar? Is there a list of whats available in the workshop manuals ?

thanks
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Re: O2 sensor voltages ?

Postby seadevil » Mon Jan 15, 2018 8:50 am

0 - 1.275 Volts from what I can see in the manual.
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Re: O2 sensor voltages ?

Postby bigBADbenny » Mon Jan 15, 2018 9:20 am

It’s a CEL that can be deleted in Romraider...
Assuming the tune is otherwise healthy.
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