Question about 2001 Nissan Frontier Crew Cab

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My 2001 Nissan Crew Cab did not pass the smog.

The check the engine light was on. The data code that came up on the smog was p1126. Can you tell me what that is?

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  • 11 Answers

Well it can be one of two things 1. your oxygen sensor 2. your cats are bad....just call your home town autozone and tell them the trouble code and they can tell you what it is....so good luck...

Posted on Nov 13, 2008

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Nissan codes


code p1126 refers to Thermostat stuck open---- except maxima 2002 causes ---wiring---thermostat---ECT sensor
code also refers to throttle motor--open circuit---maxima 2002 causes ---wiring---throttle motor---throttle motor relay--ECM. Select you vehicle and replace unit applicable to it.

Mar 30, 2013 | 2001 Nissan Frontier Crew Cab

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Cannot get the 2001 Hyundai Elantra to pass the emissions test as the light stays on. When we shut it off, it will come back on after a few miles.


You need to have your check engine light checked to see what the code errors are and repair the problem so that it will pass smog. The check engine light is on telling you that something is wrong with the vehicle.

Jun 22, 2011 | 2001 Hyundai Elantra

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I just had my valve cover gasket changed on my 2001 Nissan Frontier 2WD SE V6 3.3L on 2/13/11 and today my service engine light came on I took it to auto zone to have it plug up to find out the codes for...


yes if the mechanic was sloppy--any service theres a risk of screwin somethin else up--u need to hook it up to a tech II scanner for a data stream to obtain precise info-dont just go changin parts--1st look over engine to see any damages

Feb 19, 2011 | 2001 Nissan Frontier Crew Cab

1 Answer

My nissan frontier crew cab 2001 SERVICE ENGINE SOON light on the dashboard kept flashing. Have serviced the engine, but the light won't stop flashing. Thanks


That means you have a failure somewhere in the system (Powertrain, Chassis, Body, Network). Just because the engine was serviced doesn't mean anything. You need to have the diagnostic codes pulled to determine what is causing the light to be triggered. Then correct the problem and the light will go out. If you just erase the light or code it wont solve anything.

Jan 16, 2011 | 2001 Nissan Frontier Crew Cab

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Check engine light is on, codes say throttle body sensor. Replaced sensor, light back on in two days, now truck seems to rev an extra 5000 rpms occasionally when shifting from 1st to 2nd gear. 2001 Nissan...


the throttle body butterfly is letting too much air through so its probably stuck or dirty, they should be cleaned every service but noone ever does, if its revving beteen gears then its prob getting stuck in different places so it could probably just use a good clean out

Feb 10, 2010 | 2001 Nissan Frontier Crew Cab

1 Answer

Engine code p0340. replaced distributor 2001 nissan frontier


The engine code you have given is a p0340, which is a cam sensor.
Why did you replace the distributor ?
Please let me know.

Feb 06, 2010 | 2001 Nissan Frontier Crew Cab

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Check engine light is on and now the truck is spitting and sput


i would take it back. they should cover it. sounds like mass air flow sensor. if it was barelly detailed it water might of seeped into the intake thus sucking small amount of water which then causes sputtering and a little lack of power.

Nov 06, 2009 | 2001 Nissan Frontier Crew Cab

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Catalytic Converters


Yes any mechanic with a code scanner will be able to tell you if one or both are bad. each one has its own code. If it is a front cat then it should be a up stream cat and if it is the one further from the motor then it will be a down stream cat

May 18, 2009 | 2001 Nissan Frontier Crew Cab

1 Answer

2001 fronteer crew 4x4 dash lights


Check instrument panel fuse first. It would be labled on the fuse door or in manual. If not blown i would suspect the dimmer switch. There are to many bulbs in a instrument panel for them all to blow at one time.

Feb 15, 2009 | 2001 Nissan Frontier Crew Cab

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