Question about 2001 Chrysler PT Cruiser

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Engine light stays on if i disconect the neg. lead from battery and reconect go for a drive on hwy it stays of but in city driving it comes back on

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You can't clear the "codes" by disconnecting the battery. It comes on because it has found an error, get it checked with a scanner.

Posted on Sep 28, 2009


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My 2007 Cherokee Limited/Hemi I always use the remote start. It got cold low teens and the remote failed. The vehical will start manually but now the check engine light stays on. I have seen in my research...

Hi Danny, I would have both the vehicle and the remote fob batteries checked and if required, replaced. Cold weather can and does show up problems with batteries. It would also be a good idea to have a diagnostic scan carried out on your vehicle, just to be on the safe side. Regards John

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Reset service engine soon light on 2005 Buick LeSabre

disconect battery wait 5 minutes reconect after 3rd time driveing light will reset itself

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Need to reset the check engine light in my 1999 GMC Yukon 5.7 4 wheel drive truck

To do this disconect either the pos+ or neg- post on the battery and then turn the ingition key in the on position for three minutes, then back to off. Reconect the battery.

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Engine light on

check to see that the fuel cap is on correctly ... there is a sensor that checks to see if gas vapors are leaking into the atmosphre and causing ozone depletion and alerts you to this. if it is on correctly and tight the light will go out after you drive several miles if you want a quick check on this light ... disconect the neg battery cable for 10 min and reconnect if the light is out and stays out the problem is solved if it comes back on then look to something else as the cause. As long as the light is not flashing you are ok.

Feb 16, 2010 | 1998 Honda CR-V

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remove your battery cable (neg) for about 2 minutes,if light goes out and you start and drive and the light comes back on you have a fault,

Dec 02, 2009 | 2002 Volvo S60

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How can I reset the check engine light on a 1996 XJS

Using a scan tool should turn lite out

Jul 10, 2009 | 1995 Jaguar XJ6

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Engine light on

A code P0420 may mean that one or more of the following has happened:
  • Leaded fuel was used where unleaded was called for
  • An oxygen sensor is not reading (functioning) properly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
  • Retarded spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of readings
  • That should get you going.

Mar 22, 2009 | 2001 Pontiac Montana

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