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How do I complete a drive cycle for a 2004 nissan Murano to…

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How do I complete a...
How do I complete a drive cycle for a 2004 nissan Murano to get the 02 sensors to pass smog
Submitted: 11 months ago.Category: Nissan
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9/16/2017
Nissan Mechanic: 6Bucs, ASE Certified Technician replied 11 months ago
6Bucs
6Bucs, ASE Certified Technician
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Satisfied Customers: 1,078
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Hello and thank you for your question. My name is James.First off, were there any recent repairs? Are there any codes in the ecu? Is it just that the monitors aren't clear? Thanks
James.
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Customer reply replied 11 months ago
We replaced the downstream 02 sensor with a factory brand last week and the scanner says the o2 is incomplete
Nissan Mechanic: 6Bucs, ASE Certified Technician replied 11 months ago
Ok do you remember the code number that led you to replace the 02? Was the code cleared? How far has it been driven since?
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Customer reply replied 11 months ago
P0442 we just took it for a generic drive cycle we saw online. We drive 5 miles @55-60 mph on cruise. We drove 35-40 mph and 25 mph for 10 miles
Customer reply replied 11 months ago
We have also replaced the fuel level sensors
Nissan Mechanic: 6Bucs, ASE Certified Technician replied 11 months ago

A P0442 is an Evaporative emissions system code.

Can your scan tool read live sensor data to monitor the oxygen sensor voltages, or just read codes?

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Customer reply replied 11 months ago
it can and one of the upstream bank 2 sensors voltage is going up and down but very slowly between 0.5 and 0.7 volts I think that's how I read that
Nissan Mechanic: 6Bucs, ASE Certified Technician replied 11 months ago
Ok, what does the downstream read?
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Customer reply replied 11 months ago
Between 0.3 and 0.9
Customer reply replied 11 months ago
Is there an additional part that will assist the o2 sensors to run smoothly vs the multitasking done to make them work?
Nissan Mechanic: 6Bucs, ASE Certified Technician replied 11 months ago

The downstream sensor should read close to one volt and be steady whenever the engine is running.

Its the oxygen sensor monitor that's not clearing, not the catalyst monitor, correct?

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Customer reply replied 11 months ago
the catalyst is fine
Nissan Mechanic: 6Bucs, ASE Certified Technician replied 11 months ago

Just to be clear, if you look at all the oxygen sensors, they are all showing a reading, not stuck at 0 or 5 volts, right?

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Customer reply replied 11 months ago
Correct
Customer reply replied 11 months ago
We are being told we need to complete a drive cycle
Nissan Mechanic: 6Bucs, ASE Certified Technician replied 11 months ago

Ok. The drive cycle you did is correct....sometimes they are a little ambiguous however. The O2 monitor usually clears fairly quickly. If there are no codes in the system, especially oxygen sensor codes, for a 2004 I would suggest starting the engine cold and then taking a 20 mile highway trip at about 55 mph if traffic allows, then rechecking the monitor status.

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