Question about 2001 Volkswagen Beetle

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Had Qxygen Sensor replaced, but "Check Engine" light keeps on

2001 VW Beetle "Check Engine" light keeps coming back on after having Bank 1 Oxygen Sensor and Coolant Temp Sensor replaced with thermostat & seal done with flush and fill cooling system. The reason for repairs was 2 computer codes; P1296 P0171. Did the mechanic fix the right things? Car won't pass state inspection.

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  • johnnebesney Jun 22, 2009

    Is this MAF sensor costly; will it mean just a vacuum hose and how many sensors do I have to go through to get the Check Engine light out?

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P0171:

System Too Lean -
Off the top of my head, I believe that fault is a lean running condition. My suggestion is to bring it to the dealer. In my experience, the most likely cause is a faulty MAF (mass air flow) sensor or a vacuum leak. Many places & websites say it can be cleaned using MAF cleaner - however the only way to know if it is working properly is to check it with an oscilloscope.

Replace your MAF sensor to get rid of this code.


p1296:

COOLANT INPUT TEMPERATURE HIGH - indicates a cooling system malfunction. Is the vehicle warming up properly & reaching operating temp in a normal manner? Usually it is something like a stuck open thermostat that makes it take too long for the engine to warm up. It could also be a problem with the coolant temp sensor.

DO NOT return to this mechanic - as neither of these codes has to do with emissions!

Thanks for using FixYa - if you require further clarification - please use the "Continue with this Expert" option so we are connected in the future.

Thanks :D

Posted on Jun 21, 2009

  • blueextc3221
    blueextc3221 Jun 22, 2009

    MAF sensor is HERE - $199.99 plus $45.00 core charge.



    Coolant temp sensor is HERE - $6.99



    These should be the only 2 sensors you require.



    The MAF sensor will need 4 cycles (hot and cold) to callibrate. Your CEL will stay lit, and just go back after a few days to have the codes erased and reset it.



    Thanks!!

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