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U1001 code Code U1001 with P0420 in nissan altima 2002 2.5....Please help...

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  • 16 Answers

Go to the Dealer they ll tell you Dont Do This By Yourself you will create more problems cause you not experienced in that field.

Posted on Jul 14, 2013

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Posted on Jan 02, 2017

JJ_Barricade
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SOURCE: receiving engine code p0420 on my 2005 altima 2.5 s

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

allencortes0
  • 2 Answers

SOURCE: engine codes

sometimes coming data,but the every error comunication,for the scannner
rpm up and down same the lightgauge,low high,codes u 1001 1000

Posted on Jul 30, 2012

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SOURCE: what are codes P0720, p1574, p0420? 2002 Nissan

p0720-- auto. trans. vehicle speed sensor (revolution sensor)

p1574--automatic speed control device/vehicle speed sensor

p0420--two way catalyst system bank 1

Posted on Apr 03, 2010

  • 1 Answer

SOURCE: 2002 Nissan Altima P0720, P1574, P0420

I have a 2002 Nissan Altima. Can anyone tell me what these codes are? And how to fix them? P0420

Posted on Jan 12, 2011

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1 Answer

What does code u1001 mean?


It's a communications problem between modules on the CANS system. U1000 is usually wiring/grounds, U1001 is usually a module. Any symptoms?

Aug 23, 2014 | 2002 Nissan Altima

1 Answer

Answer to a u1001 code


Google the code

CAN Buss -- problem

Controlled Area Network

Read up on it

Aug 15, 2014 | 2004 Nissan Altima

1 Answer

U1000 2002 altima 2.5


Do you know about serial data networks ? C.A.N - controller area network . Do you know what U - codes are about ? Download 2002 Nissan Altima LAN System Section LAN PDF Manual 60 Pages

Download 2002 Nissan Altima Body Control System Section BCS PDF Manual 22...

Here are sections of factory repair manual . Read up on C.A.N . U 1000 an U1001 one of the modules is having a problem on the wiring for the C.A.N bus is . You can check at the DLC with a volt meter .

Download 2002 Nissan Altima Emission Control System Section EC PDF Manual...

CAN COMM CIRCUIT U1000 1000*6 - - × EC-137 CAN COMM CIRCUIT U1001 1001*6 - - × EC-137

Apr 03, 2017 | Nissan Altima Cars & Trucks

1 Answer

U1001 u1000 2002 Nissan Altima 2.5


Do a search for TPS Transmission positioning sensor

Mar 16, 2014 | Nissan Altima Cars & Trucks

1 Answer

P0420 and U1001


U1001 indicates that the ECM either isn't, or at some point in time wasn't, in communication with other controller modules on the car. From the sounds of it, I would suspect the BCM. Check the wiring harnesses at both of those places. If they are fine, you're probably going to have to replace the ECM, or spend some time looking for a short "somewhere" in the vehicle wiring, which can be a long and painful experience and would probably be wasted time in this case.

Jul 14, 2013 | 2002 Nissan Altima

1 Answer

Error code u1001


Hi Brenda,cool pic,love that commercial,wee.Here's your trouble code.Trouble Code: U1001

Controller Area Network Line Malfunction

Possible Causes:


CAN connector is damaged or is disconnected.CAN communication line is open, shorted to ground or to power.One of the modules is shorted and pulling the CAN voltage low.

Feb 09, 2013 | 2002 Nissan Altima

2 Answers

What are codes P0720, p1574, p0420? 2002 Nissan Altima


p0720-- auto. trans. vehicle speed sensor (revolution sensor)

p1574--automatic speed control device/vehicle speed sensor

p0420--two way catalyst system bank 1

Apr 02, 2010 | 2002 Nissan Altima

1 Answer

2002 Nissan Altima P0720, P1574, P0420


I have a 2002 Nissan Altima. Can anyone tell me what these codes are? And how to fix them? P0420

Apr 02, 2010 | 2002 Nissan Altima

2 Answers

Engine codes


sometimes coming data,but the every error comunication,for the scannner
rpm up and down same the lightgauge,low high,codes u 1001 1000

Jan 15, 2009 | 2002 Nissan Altima

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