2000 Honda Civic Check engine light

2000 HONDA CIVIC
92,700 MILES • 4 CYL • FWD • AUTOMATIC
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CIVICPA
  • MEMBER
  • 2 POSTS
Hello,
Recently, I had to replace my factory gas cap with a locking cap because of a rash of gasoline thefts by way of siphoning. I noticed that the new cap does not close tightly at all. My factory cap requires 3 clicks and it's tight as a drum. I own a 2000 Civic EX sedan with the 1.6 liter V-tech and have never had an issue with this car and I've maintained this car always. I read on other websites that the culprit for the check engine light to glow can be, among the many reasons, caused by a loose gas cap. If I were to switch gas caps and just leave the locking cap on the car when it's parked overnight and replace it with the factory cap before I drive the car be a solution to this issue?
Jun 15, 2008 at 10:46 AM
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KHLOW2008
  • CAR REPAIR CONTRIBUTOR
  • 41,814 POSTS
Hi CivicPA,

The gas cap can be the cause but you need a scan to confirm it.

As to your suggestion I would not be commenting as the gas cap is part of emission control and it might have legal implications.
May 19, 2021 at 1:57 PM
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CIVICPA
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KHLow2008,

Thank you for the reply. I'll take you up on getting the diagnosis done. I just suspected the cap because it's the only part I replaced within the last 4 days. I can only hope it's just that and nothing else. Can't afford a big repair bill in my current situation.

Thank you,
CivicPA
May 19, 2021 at 1:57 PM
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