Question about 2002 Volkswagen Passat

3 Answers

Car acts like it doesn't want to go..I was told it could be the O2 sensor?

The check engine light is on but when I had it at a local repair shop, they said it was probably just the O2 sensor. Now it acts as though it doesn't want to go and the check engine light started flashing.

Posted by on

Ad

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,101 Answers

Take it to a part store and have them scan it for the codes they do it for free,and let me know thank you ted

Posted on Dec 11, 2012

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a 2002 volkwagen jetta and my check engine light is blinking and my car jumps plus my engine is knocking

Posted on Dec 14, 2012

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Volkswagen Master
  • 14,036 Answers

Have code scan first, a bad oxygen sensor will cause engine run poorly in rich mode.

Posted on Dec 11, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

  • 4 Answers

SOURCE: 98 VW Beetle 2.0L, Check engine light with OBD Code PO118

BTW - if you have less than 100,000miles you might be able to have your cat replaced under warranty by the dealer. In Canada it's 160,000km.

Posted on Mar 16, 2009

  • 34 Answers

SOURCE: nox sensor. What is it? How much does it cost to repair?

Well, it could be either and oxygen sensor or a knock sensor.

Oxygen sensor monitors O2 levels in the exhaust.

The knock sensor listens for engine pinging and adjusts the timing as needed.

Prices vary on repair. I would recommend having the owner of the car either show you something from a repair shop that has the sensor name written, or take the car to a parts store that offers free code scanning and see what comes up.

Posted on May 13, 2009

  • 14036 Answers

SOURCE: 2002 volkswagen passat repeat sensor code problems

tell me everyrthing the car does.tell me what sensor light you referring to when you say car shudder.sound like transmission torque converter problems torque converter makes shudder noises.how does it shift does it shift hard or ****.it could be speed sensor it causes transmission problems.

Posted on May 20, 2009

  • 154 Answers

SOURCE: Check Engine Light Flashing During Acceleration/Rough Idle @ Stop

check engine light on usually mean emissions. ie catalytic converter, o2 sensor.

Posted on Jun 10, 2009

CaptainKeyz
  • 202 Answers

SOURCE: have this code PO171, what does this mean.

Not sure that the O2 sensor was bad. It sounds like it was telling you that side of the exhaust system was picking up a lean mixure at the O2 sensor. The O2 sensor was doing its job by telling you the mixture changed. If the O2 sensor was bad, it would say low voltage range for that sensor, or open curcuit.
Now the car has had time to do its diagnostic sweep, it is telling you the same thing, but from a different sensor...the fuel mix is too lean. Air/spark/and fuel is what you need in the correct amounts. In your car, the ECM engine control module controls this by taking readings from all the sensors several hundred times a second.
Mechanically, you have a few options. Change the fuel filter...under the car on the passenger side. It is an easy job.
Change the fuel pressure regulator. This keeps the fuel at 4 BAR so the fuel injectors can do their job correctly. This job just needs a screw driver to pop off the clip that holds it in place. No hoses need to be removed. It is on top of the intake manifold, in-line with a metal fuel line and a rubber one.
The fuel injectors could be clogged up on one side of the engine. Run some fuel injector cleaner through a tank of gas. Also, listen for a constant ticking sound at each injector. If one sounds off PAR, then replace it.
The fuel pump may not be giving you enough power. However, the readings seem to be localized to one side, so I doubt it.
Start with the easiest thing, and see if it works. Also, you will need to get yourself a VAG scan tool. It is the only one with codes in it for all of your VW systems, not just engine codes like the ODB scanners. You can get a nice one for $50 on-line.
Good Luck!

Posted on Feb 24, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Hi, I have a 98 Honda Accord Ex V6 that showed the P0420 code and I was told that the catalytic converter needs to be replaced. So I replaced it and the check engine light came on with the P0401 code. I...


The error code p0420 does not rise only due to faulty catalytic converter but may also rise due to one of following reason:

1. Faulty rear O2 sensor

2. Damaged O2 sensor wiring

3. Exhaust leak

The error code p0401 indicates faulty Engine Gas Recirculation (EGR) valve. The remedy to the problem is:

a. Replace EGR valve

b. Repair damaged wiring of EGR valve

c. Clean the EGR valve tubing

Jun 27, 2013 | Cars & Trucks

1 Answer

P0160 code repair


Always buy OEM sensors.

May 07, 2017 | 1999 Nissan Maxima

1 Answer

Check engine light back on after replacing o2 sensor


I called Kia about my check engine light and I told them my mechanic
read the computer and it says 02 sensor. She told me Kia does not sell out there codes to the computer in our cars and that I would have to take it to a Kia repair shop to get the correct reading form the computer

Feb 09, 2013 | 1996 Kia Sportage

1 Answer

Jeep liberty 2005 3.7 v6. Doesn't want to start,


This sounds like a fuel pump problem, if the pump is bad and it does not give the engine the right pressure the car wont run and if it does it will not have power and can give an o2 code due to lean mixture, you may have a bad o2 but this would not make car not start, the o2 does not play a role in the engine until engine temp is up and in closed loop. have the fuel pressure tested i would bet is is low or no pressure, check the fuel pump and the relay .start there

Dec 29, 2012 | Cars & Trucks

1 Answer

Where is the oxygen sensor located on a 1989 Buick regal ?


its located on your exhaust sytem there are usually two some have four go yo autozone if you have a check engine light on they will tell you what bank o2 sensor it is and give you a diagram but it sounds like your fuel pump is going out

Aug 20, 2012 | 1989 Buick Regal

1 Answer

98 Tracer, higher hp engine, stumbles when let off throttle or when first applying throttle. Acts like a cyl misses occasionally. New egr, sp plugs, and timing belt. 122k on car. Once a shop said needs O2...


Most big auto parts chains will give you a free diagnostic once a trouble code appears. Then you know which O2 sensor is bad or if another problem.

Oct 01, 2017 | 1998 Mercury Tracer

1 Answer

Hi-Failed inspection at Motor Vehicle Code PO160 (2001 Nissan Maxima). Car runs fine- no dash lights on. Left Rear Oxygen Sensor? Cost to fix or rigg it? Must get this car passed. Thanks in advance,...


CausesPotential causes of an P0160 code include:
  • Holes in exhaust near post cat o2 sensor
  • Bad Bank 2, position 2, o2 sensor
  • Wiring problem, melted harness, broken connectors, etc.
  • Bad PCM
Possible SolutionsIt's always best to do a visual inspection of the exhaust system first. Look for holes near o2 sensors or wiring harnesses coming in contact with exhaust components. Repair as necessary.
1. Start the engine and allow it to reach operating temperature. Using a scan tool, observe the Bank 2 position 2 o2 sensor. If it isn't moving at all this doesn't necessarily mean that anythings wrong. Post cat o2 sensors often switch very little. Increase the engine RPM to a fast idle and then recheck the sensor voltage reading. If it starts switching now, the sensor may be sluggish and/or intermittently going "dormant". Replacing the sensor at this point would be a good idea. Visually check the o2 sensor for contaminates, etc. If you suspect it's contaminated with coolant or oil, replace it. But, if it still isn't responding after increasing engine RPM, turn off the engine and unplug the 2/2 o2 sensor. With KOEO (key on engine off) check that there is 12 Volts battery voltage and a good ground to the o2 sensor heater element. If the heater element has no battery voltage it can cause the o2 sensor to be sluggish and not switch properly which can cause a P0160.
So, diagnose that problem first(there will usually be other codes present). If there is power and ground to the heater element check that the sensor ground is present. If it is, connect a jumper wire between the sensor ground and signal wire. Now the 2/2 o2 sensor reading should be low. If so, replace the Bank 2 position 2 o2 sensor. If, after connecting the jumper wire, the o2 sensor reading still remains "stuck", check for wiring problems, harness contacting exhaust components, or broken connectors. Repair as necessary. Then recheck. If you can find no wiring problems and the o2 sensor reading on the scan tool doesn't change after installing the jumper wire, recheck at the PCM connector. It may be necessary to clip the signal wire near the PCM in a location that will be easy to repair. If it now shows a low voltage reading, then you know beyond a doubt that there is a wiring problem. At this point clipping the offending wire out of the harness and running a new one may be your best bet. But If it still shows no change, the PCM may be at fault.

May 14, 2011 | Nissan Maxima Cars & Trucks

1 Answer

I have a 2002 hyundai accent in which the check engine light keeps coming on. I replaced the o2 sensor twice because I was told it was a bad o2 sensor and now the light is on again. any ideas---my...


Thats why you dont take advice from ottozone. First you may really have had an oxygen sensor problem, then you bought one from ottozone, ( who brag about how cheap their parts are) then you put in another cheap sensor. Have your car looked at by well equipped repair shop thats not trying to sell you car parts.

Dec 16, 2010 | 2002 Hyundai Accent

2 Answers

Autozone diag: Check eng light o2 sensor - is this a do it yourself job?


its not hard to change the o2 sensors but if they are baked in which means really hard to break loose u could have problems try spraying them down with p.b blaster and getting them out

Jun 15, 2008 | 1998 Toyota Avalon

Not finding what you are looking for?
2002 Volkswagen Passat Logo

348 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volkswagen Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

yadayada
yadayada

Level 3 Expert

76848 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8582 Answers

Are you a Volkswagen Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...