Question about 2005 Nissan Primera 1.8
Fault came on dash airbag warning and engine fault someone gave me codes po171 and po420 is this a catalyst fault
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: I got code PO420 and PO430
Here are the most common problems,
Air leaks at the exhaust manifold or in the exhaust pipes. Catalytic converter is damaged, contaminated or has failed. Front HO2S or rear HO2S is contaminated with fuel or moisture. Front HO2S and/or the rear HO2S is loose in the mounting hole. Front HO2S older (aged) than the rear HO2S (HO2S is lazy)
Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. Autozone turning the light off does nothing for you, and is against their company policy. If you do not have the proper tool, reference materials or experience I would take it to a professional. Finding out the trouble code is just he start of the diagnosis process.
Hope this helps.
Posted on Feb 28, 2009
A p0420 code indicates a Catalytic System efficiency failure, Bank 1.
Basically, the computer is seeing reduced efficiency of the catalytic converter or one of it's components (such as an 02 sensor)
There may be a few root causes, such as a faulty oxygen sensor, faulty coolant temperature sensor, faulty converter, Large exhaust leak, or retarded (slow) timing.
Posted on Nov 30, 2009
Huge problems with these cars. The Pre-cat converter is built into the exhaust manifold. Expensive to replace. No Recall on this item. Some say that inferior compounds in the catalyst cause corrosion and early wear of the piston rings. I have seen one of these use 5 qts of oil in 300 miles. Is this car using excess oil?
Posted on Jan 16, 2010
tats the engine management light mate usally comes on when u have low oil or antthing to do with the engine bring it to nissan dealer if its not low oil they will hook it up to a machine and bingo they have your problem.
Posted on Feb 24, 2010
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