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Emissions Trouble Codes P044. What does that mean?

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What does code dtc3 fail mean on my emissions test,,97 nissan pathfinder

I means that the vehicle failed it's emissions test as it failed the digital trouble code reading test 3
the testing station tests the exhaust emissions and the onboard computer
Your computer failed the test

May 16, 2017 | Nissan Cars & Trucks

1 Answer

Have replaced 2 solenoids near engine, is there a 3rd underneath car?

There is a vent solenoid under the vehicle near the gas tank on the evaporator canister or charcoal canister An your replaced one near the engine you didn't need to. Only 1 on or near engine ( purge solenoid ) But there is also the possability the gas cap leaks , the fuel filler neck is rusted somewhere , or one of the hoses as a pin hole . You could replace all the solenoids an still have the code come back. The best way to trouble shoot these type problems is hook up a smoke machine an smoke the system . Your best bet would be to take your vehicle to a qualified repair shop. I mean unless you like spending money needlessly .
DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected.To aid in locating intermittent leaks, use the J 41413 EVAP Pressure and Purge Station to pressurize the EVAP system. Move all EVAP components while testing with the J 41416 Ultrasonic Leak Detector.

Jul 16, 2016 | 2000 Oldsmobile Alero

1 Answer

My reduce engine power came on what does that mean i have a 2004 Pontiac grand prix with a super charge

Generally speaking, it means the engine computer has found a problem that could damage the engine or emissions, so it is restricting power output. The driver should have the engine computer checked for trouble codes next.

Aug 27, 2015 | Pontiac Cars & Trucks

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O/D and check engine light is on. Drives fine. Why is it on?

The O?D light means the overdrive is not on or not working. The check engine light means the engine computer has found a problem with the performance or emissions. You need to get the engine computer checked for trouble codes to proceed.

Feb 20, 2015 | Cars & Trucks

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Service soon light is on

The warning light means the computer has found a problem that can affect engine performance or emissions..
You would need to get the computer scanned for trouble codes to proceed with testing.

Feb 22, 2013 | Infiniti Cars & Trucks

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1989 GMC Sierra Truck Engine light is on? What could that mean?

The check engine light means something has happened to the performance of the engine to affect emissions. You need to get the computer scanned for trouble codes to proceed.
You can research "GM check engine light" online to get the steps to check it yourself.

Oct 08, 2012 | 1989 GMC Sierra

1 Answer

My car had a check engine soon light come on. We put the code thing in and I got a code # P044 on my 2003 Alero. What does this mean?

P044 HO2 Bank 1 sen 3 heater circuit high

Possible causes
open or shorted to ground
2) poor electrical connection
3) fuse
4) bad sensor
Engine Control Module maybe bad

Hope this helps Tim

Apr 04, 2011 | 2001 Oldsmobile Alero

2 Answers

2005 Scion XA Check Engine Light (Not maintenance Light!) @ 35K Milage.

The check engine light means that something is going wrong with the engine, electric, or emissions part of your vehicle. it will need to be hooked to a scanner to find out what the trouble codes are. Usually Autozone will scan and give you the codes for free. get them and post them here and i will try to help you with the diagnostics

Oct 06, 2010 | 2005 Scion xA

1 Answer

What does trouble code P0442 on a 2002 saturn vue mean?

evaporative emissions detected,small leak,not serious,just have the codes cleared,see if it happens again.

Apr 21, 2010 | 2002 Saturn VUE

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Did not pass state inspection (vehicle)

First the fault codes,
U110C is No Fuel Level Bus Message
U0155 is No Cluster Bus Message.
Unfortunatly you have to be able to communicate with the instrument cluster with your scanner to diagnoise and I do not think an aftermarket scanner can do this.

Mar 02, 2010 | 2005 Chrysler PT Cruiser

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