Question about Volkswagen Jetta

1 Answer

I've got a 2003 jetta 2.0 made in april of 2002 throwing a po343, I replaced the cam sensor, timing belt, it ran great for about 10 miles then the ignition pack went out(miss-fire cyl 1). I replaced the coil pack after I had it tested, it ran great for about 3 miles then back to limp mode. scanned it again and now the po343 is back!!! any help would be greatly appreciated

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Volkswagen Master
  • 2,044 Answers

If your car is off a single tooth on the Timing Belt, you will have continued problems... you need to verify the timing is on. If the timing is off, reset it and then proceed if the problem returns

I did have a problem with a defective Cam Shaft Sensor and replacing it with another Defective Sensor....

Posted on May 26, 2011


1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Will a timing chain move if it has slipped a tooth ?

Cleaning a cam sensor won't help if the coil inside is broken. Test with digital ohm meter. No continuity=bad. I'm assuming you do not have spark at plugs.

Jul 28, 2015 | Cars & Trucks

1 Answer

Check engine light keeps coming on my 2002 Honda civic si. After MANY times at the same Machanic he keeps throwing codes to the car resets the light. After 30 miles or more it comes back on. Things he...

if its throwing a code for cam sensor but new sensor does not fix it given the fact of recently replacing the timing chain id say it sounds like the timing was not set correctly which is causing the cam sensor to receive abnormal readings throwing the check engine light on. pull cover and check timing mark placement against specifications

Sep 21, 2012 | Cars & Trucks

1 Answer

Check Engine light on. 2003 non turbo, bought new. At 60,000 miles it over heated and a shop replaced radiator, thermostat etc. Car was driven about 10 minutes hot and then towed to shop for those rep

I'm an ASE cert. technician and I've never had trouble from the aftermarket cam sensors on these engines. You may want to double check that connection since this is a common problem on these engines. You'll also want to look at the old sensor. Did it look like something had rubbed into it? The cams on these engines are known to "walk" back and grind into the sensor.

May 28, 2012 | 2003 Chrysler PT Cruiser

1 Answer

I have changed the camshaft position senson several times on my 05 Neon and now replacing it doesnt do any good. im getting an intermittent camshaft positon circuit error. how do I test the wiring and what...

I never had a problem with the cam sensor in my neon, drove it for 10 years. However, the O2 Sensor fault tends to send a signal that a bad Cam sensor is present and if the timing belt is lose or jumps that will send a false code. The timing belt on these uses a spring tension device in the 2000 to 2003 and a hydraulic tension arm in the 2003 and later models. The hydraulic tension assembly tends to hang and allows the timing to be erratic. Not enough to throw it off all the time, apparently when the belt pops it comes free, but that is all it takes to through the cam timing off and that causes the computer to send a fault signal or random misfire signal. Look at the Timing belt after replacing the O2 sensor if the O2 replacement doesn't resolve the problem.

May 21, 2011 | 2005 Dodge Neon

1 Answer

I have a Kia Sportage 4wd 2002 with under 60000 miles. I lost power steering and when I took to mechanic they said I threw a belt(which they replaced with great difficulty) due to a bent or warped harmonic...

I got stuck paying dealer for new crank pulley not harmonic balancer as mechanic said. I am driving as little as possible until part comes in and can br put on. Hopefully, I will not damage the crank shaft or throw a belt.

Nov 05, 2009 | 2002 Kia Sportage

1 Answer


First check all wires for any thing loose.
The muffler blowing up leads me to think the engine is so far out of time the PCM cant correct it.

REally you need to get it to a good mechanic.

Jun 26, 2009 | 2001 Volkswagen Jetta TDI

1 Answer

2003 vw jetta shows po343

Your Error code is your Camshaft position center sensor. This can be a result of a slipped or stretched timing chain or just a need to have it recalibrated. Your cars engine is rev limiting to avoid damage as if your cam is out of sync you can do serious damage as valves slap on the top of your pistons. Sorry but unless you have a computer analizer and alot of experience working on engines this is one you'll have to have repaired at a dealer.

Apr 25, 2009 | 2003 Volkswagen Jetta TDI

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

390 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volkswagen Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers


Level 3 Expert

76649 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

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

Answer questions

Manuals & User Guides