Question about 2001 Volkswagen Beetle

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2005 VW Beetle. Engne light on and EPC light comes on with significantly reduced power.

Engine light is on and EPC light comes on at acceleration and significantly reduced power. Here are the codes from Auto Zone. P0321 faulty CKP sensor P0341 faulty CMP sensor (intake) camshaft position sensor P0121 faulty throttle valve control module (TPP) P0420 air leak near or faulty fuel control H02S (heated oxygen sensor)

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  • Jane Hunt
    Jane Hunt Apr 17, 2014

    Also, the brake lights, and head lamps are out all the time. Sometimes the signal lights work and sometimes they don't.

  • Jane Hunt
    Jane Hunt Apr 18, 2014

    Could it be bad gas? I notice a difference depending on the gas I buy.

  • Howard Smith Apr 19, 2014

    I would start by having the codes reset and see if those codes return. If they return replace the faulty sensors, crank position and cam position sensors.

  • Howard Smith Apr 19, 2014

    As far as the lights go, check the conectors, make sure they are locked in place, This model year Beetle has alot of electrical problems, wires have been known to break within the harness. I hope I was Heplful

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  • Master
  • 388 Answers

Sounds like all those sensors are going to need replaced. Basically, they are all in charge of metering the air and fuel to the engine, so if they are malfunctioning, the car isn't going to run correctly.

Posted on Apr 16, 2014

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Posted on Jan 02, 2017

CaptainKeyz
  • 202 Answers

SOURCE: VW PASSAT 03 V6. EPC AND TRACTION LIGHT COME ON INTERMITTANTLY.

First, to read VW codes you will want to get yourself a $50 VAG tool. It will read all your systems, not just the ECU.
Electronic Power Control can go out for several reasons. Check your brake lights with the car running. Check you radiator fluid level. If the car is running bad, you could have bad spark plugs/ wires or ignition coil.
The traction control is tied into the ABS system and often causes problems here as well. Each wheel has a speed sensor and magnet wheel in the hub. You can check these for damage by removing the tires for access. The sensors come out by hand, and inside the hole they come out of is the place to check the magnets with a flash light. Apply a small amount of wheel bearing grease to the sensor.
The control unit goes out in these systems at an alarming rate. They can be easily removed, and repaired for under $200 at modulemaster.com
Since it is intermit, I suspect most likely a loose sensor, or electrical connector.
If your brakes feel squishy at all, bleed the brake lines of air and contaminants.
Good Luck!

Posted on Feb 23, 2010

  • 315 Answers

SOURCE: Check Engine Light On

Sounds like a bad oxygen sensor. Consult a mechanic for troubleshooting.

Posted on Jul 14, 2009

  • 64 Answers

SOURCE: 1999 volkswagen stalled

first check cylinder 1 , spark plug, ht leads, coil,

then clean the trottle body with carb cleaner

if that does not work replace the throttle body, comes complete, and do a basic setting on it with diagnostic machine

Posted on Feb 19, 2009

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Thanks for using FixYa - a FixYa rating is appreciated!!

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