Question about 2003 Volkswagen Beetle TDI

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I acclerated quickly in my 2003 VW Beetle & the check engine light came on. It's not flashing, just steady. The manuel said the light would go off once the engine idle steadied, but it did not.

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That could be an over boost trouble code thrown by the MAP sensor alot of the ford powerstroke trucks do it and sometimes the light comes on and then goes right off other times it will stay on for a few days nothing to really worry about as long as everything is working as it should hope this helps

Posted on Apr 30, 2010

Testimonial: "Exactly what I needed to know. Wasn't sure if waiting would be dangerous, and now I know it's OK to wait a few days to see if problem resolves itself."

  • bsdracing
    bsdracing Apr 30, 2010

    Glad I could help you can probably find more info about it on a TDI forum also a boost gauge will tell you about what psi the light will go on.

  • Don Jan 17, 2011

    Over boost condition will trip a code too. The N75 Solenoid Valve controls boost and often these fail.

    When boost is too high fuel is reduced to save the engine. Check vacuum hoses from and to the N75 valve.
    Whilst driving, you can switch the ignition off and back on quickly to reset boost control if you loose power. To reduce times it over boost, go easy on the throttle and try not to ever bury the throttle pedal in the carpet.

    It is a small square metal valve with three vac' hoses and a electrical connector on it.

    Trace the small Black vac' hose from the side of the air filter housing back to the valve. It usually lives on the firewall.



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