Question about 1998 Volkswagen Passat

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1998 3b5 passat konnwei kw809 scanner not scanning engine codes can view ECU information many thanks jack

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  • TCI Feb 14, 2015

    Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?



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Posted on Jan 02, 2017

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n/s front window wont go up switch is ok where do i find the newtral point

Posted on Dec 08, 2008


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K14b ecu swift check engine light on short in ecu

the operators guide is clear. CEL on , get car serviced. (at a real ASE service shop)
or if savvy DIY person?, scan it your self.?
with a thing called a scan tool.
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post more symptoms, the above is not clear.

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Ecu box passat

ecm goes bad it will go in limp mode, vechicle will run poorly check engine light will stay on vechicle wont need to use a code scanner check for ecm fault code, if check engine light not turning on when you start vechicle could have blowed ecm fuse or wiring problem, could have loose connection at ecm electrical connector or ecm getting poor ground but first check for a defective ecm using a code scanner.

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Hello Friends, I need help and advice. I have a Mazda Tribute 2.3 (2005 Mechanical) is the same as the Ford Escape and Mercury Mariner. Step to indicate symptoms: The vehicle began to take a few...

Communication errors with the vehicle's ECU does NOT mean that you need to replace the ECU OR the car! This code means that there is a problem with your Control Area Network (CAN).
Your vehicle has many computer modules onboard. The CAN is what networks all of these modules together so they can share information with each other and with your scan tool. (I like to call this the phone line) ...Your phone line is down! :) When your phone line is down, you do not throw away the phone (ECU) or the house that the phone is in (the car). You repair the phone line.

The way you have described the problem, It sounds like your battery is very low. I would begin to diagnose this problem by testing the battery and the rest of the charging system (wires, cables, alternator, etc.).

Many communication errors can be fixed by repairing the battery or charging system.

If repairing the battery and/or charging system does not help, you will need a true scan tool (NOT a generic code reader) to diagnose your CAN circuits.

Jul 26, 2011 | 2005 Mazda Tribute

1 Answer

1) I have bought a Land Rover Defender 2007 bulk head. On the ECU I have the following numbers under the top bar code the number is 7H12-12C520-BF and under the smaller bar code. S/N *YJRSVOANPWC8* Can...

Those numbers refer to that piece specifically.
The chassis serial is usually in a plate on the windshield.
Check the owner's manual for instructions on where to locate.
Some scanners to do fault diagnosis, has option of chassis serial information

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VW Passat estate 99 T reg. From start up continual misfire and lack of power until engine is warm. Once warm fault becomes intermittent. There are no warning light on dash. I have replaced HT leads with no...

There may be no check engine light but that doesn't mean there isn't a code in the ECU. Especially with a misfire. I'd have the codes scanned and see what you got. The cannister issue isn't going to give you a misfire it will give you stalling and rough idle.
Lets see what ECU is saying. You can go to Autozone if you don't have a scanner they will scan it for free. If scanning turns out negative than have a cylinder leakage test done. This way we can determine which cylinder has the problem and what the problem is.

Apr 02, 2010 | 1999 Volkswagen Passat

1 Answer

I need to know the location of the code scanner hookup in a 2003 VW Passat

All of the scanner ports on cars are required to be within a certain distance of the steering wheel. Typically they are not far under the steering wheel. Look for a cover if it is not clearly visible from under the dash.
OBD2 scanners will scan the engine components only...which is useful. If you want to read all your VW systems, you will need a VAG scan tool. You can find them for $50.
Good Luck!

Feb 28, 2010 | 2003 Volkswagen Passat

1 Answer

2000 hyundai elantra car cranks but wont turn over just started fine 3 days ago

Did you scan for any trouble codes? Whenever the 'CHECK ENGINE' (Service Engine Soon) light comes on, the ECU (Engine Control Unit) sets a Diagnostic Trouble Code (DTC). These codes identify the particular engine management system which caused the light to come on. You'll need to use/find an OBDII (On-Board Diagnostic) Scanner to retrieve any code which have been stored in the ECU computer. Afterward, we might be able to help you DIAGNOSE the problem and perhaps fix the problem.

Sep 10, 2009 | 2000 Hyundai Elantra

2 Answers

Lights on scanner will not read the dtc 99 vw passat

you need a laptop and vag-com program to properly get codes from vws. other scan tools my just even throw you a totally wrong code#

Apr 24, 2009 | 1999 Volkswagen Passat

2 Answers

How to diagnostis 1992 Lexus V-8 engine control unit

To check codes you can use a jumper to connect terminals tc TE1 and E1 together at the data link conector in the engone compartment. this is located at the left fromt of the intake.

Nov 26, 2008 | 1992 Lexus Sc 400

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under passenger side front mat is the ecu for all the doors and windows look there u will probably find a broken wire(common fault) if not remove panel on door and check electrical supply to it if all ok regulator has packed up....

Oct 15, 2008 | 1998 Volkswagen Passat

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