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Related Nissan Questions
I have the following code on my Nissan Pathfinder 2003.
I have the following code on my Nissan Pathfinder 2003. P0430: Catalyst System Efficiency Below Threshold (Bank 2) -- I am not a good mechanic, but I understand things. I would like to know before I c… read more
Anthony P.
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I have a 2005 nissan Pathfinder with 130000 Mil.on it
I have a 2005 nissan Pathfinder with 130000 Mil.on it recently engine light came up and my my milage got worse, i have scanning tool and give me P0430 code which is bank2 cat converter ,i also checked… read more
Jake
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Pathfinder: .. I have a 2001 Pathfinder LE 120K miles
Hello.. I have a 2001 Pathfinder LE 120K miles with OBD codes reading PO420(Bank 1) and PO430 (Bank 2) Catalyst System Efficiency Below Threshold..No power loss or idle stumble. What's your call here?… read more
Rick
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nissan maxima: 2001 nissan maxima engine code p0430 catalyst
2001 nissan maxima engine code p0430 catalyst efficiency below threshold bank 2. ive changed i beleive all the o2 sensors on this car before in the past 5 years and the cat coming off the headers by t… read more
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Frontier: On this same truck,,, Nissan Frontier, 3.3 it has
On this same truck,,, Nissan Frontier, 3.3 it has come back showing a code PO430 Catylist Effeciency below threshold.… read more
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Getting code P1273 and P0430 on Nissan Xterra. How to fix?
So I've got a 2005 Nissan Xterra and I'm having a really hard time diagnosing an issue. It originally threw a p0430 code so I replaced my primary cat and upstream o2 sensor thinking it would resolve t… read more
Clifton B.
Clifton B.
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My 2003 Frontier 6 cylende automatic truck has this code reading
My 2003 Frontier 6 cylende automatic truck has this code reading on it with the service engine light on catalyst system efficiency below threshold bank 2 p0430 How do I find out what this means and fi… read more
6Bucs
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Nissan/Datsun Xterra X: P0430 scan code from Nissan Xterra
P0430 scan code from Nissan Xterra 01 Service Engine Soon check light. - Just had my 01 Xterra emission tested 1 week ago. The results were fantastic - about 90% lower than the limits allowed. Now ove… read more
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A service engine soon light on that..catalytic converter..o2 sensor
I have a service engine soon light on that gives the code p0420 ( catalyst system efficiency below threshold, Bank 1). I have asked around and found that this is an issue with either the catalytic con… read more
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2005 Nissan Pathfinder SE: V6..I believe, the relay unit / ecm (
Hello, I have a 2005 Nissan Pathfinder SE V6. About 10 months ago I had it in the shop to have, I believe, the relay unit / ecm (?) replaced. My car was dying periodically, and running horribly bad. T… read more
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98 Nissan Pathfinder: Im getting two codes..Knock Sensor..O2 sensor
My '98 Nissan Pathfinder just failed the state inspection in Texas. I'm getting two codes: PO430: Catalyst System Efficiency Below Threshold (Bank 2) and PO325: Knock Sensor 1 Circuit Malfunction (Ban… read more
Tom
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2005 nissan titan: check engine light..chassis..mount..a fault code
2005 nissan titan banks power pack replaced cont unit -usm 284b6-zcooa because my truck didnt start 6 months ago it worked but check engine light woundnt stay off.i I need rhe part number for the chas… read more
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2003 Pathfinder LE: 000 miles..p0420..o2 sensors..catalytic converters
My 2003 Pathfinder LE with 145,000 miles failed the DC emisions test on both banks: P0420 Catalyst System Efficiency Below Threshhold (Bank 1) P0430 Catalyst System Efficiency Below Threshhold (Bank 2… read more
Jay
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2004 Nissan Titan LE: 4X4..66,000 miles..V8..automatic transmission
I own a 2004 Nissan Titan LE 4X4 with 66,000 miles on it. It has the standard 5.7 liter V8 and automatic transmission. I have had all the servicing performed religiously except for the transmission fl… read more
Tom
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NISSAN TITAN LE: DEALER RUNS DIAGNOSTICS WHILE LITE IS ON THEY GET
NISSAN TITAN LE 2004 MODEL 235,000 MILES. THE PAST 2 YEARS MY SERVICE ENGINE LIGHT WILL COME ON FOR A FEW WEEKS THEN STAY OFF FOR A COUPLE OF MONTHS AND COME ON AGAIN FOR A SHORT PERIOD. WHEN DEALER R… read more
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code po420 2003 altima cat efficency below threshold on bank
code po420 2003 altima cat efficency below threshold on bank 1, which sensor would this be… read more
Ron Z.
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2001 Nissan Sentra GXE: it threw the following codes..Po..Catalyst
I have a 2001 Nissan Sentra GXE 1.8. It is not running correctly and on a code machine it threw the following codes: Po 420 Bank 1 Catalyst eff. below threshold Po 430 Bank 2 catalyst eff. below thres… read more
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2001 sentra: car runs great, idles smooth, no misfire..o2 sensors
I have a 2001 Sentra XE. I pulled two codes from the OBD II scanner: P0420 and P0430, catalyst efficiency below threshold, banks 1 & 2. The car runs great, idles smooth, no misfire...even under a load… read more
Clifton B.
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used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

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SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

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Meet the Experts:

Chris(aka-Moose)

Chris(aka-Moose)

Nissan Technician

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Tim Mohr

Tim Mohr

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Marty

Marty

ASE Certified Technician

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ASE & Bosch master tech. 30 years experience.

Mike V.

Mike V.

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Ron

Ron

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34 years of automotive Repair

Anthony

Anthony

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ASE Master Automobile Technician with over 18 years exp. in this field.

Richard

Richard

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93 satisfied customers

Nissan Tech ASE certified technician

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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