Gas Cap Escapades A Hidden Driver of Check Engine Light Anomalies

What causes this warning, as well as the check engine light to come on, is a fault with the fuel tank emissions/vapor emissions as a small leak has been ... 58Willys Well-Known Member Jun 18, 2024 Yes, bad gas cap can cause CEL. But pull the codes to see what's really going on. “check gas cap” is simply the pcm telling you that the evap system won't hold the correct amount of vacuum for the specified time frame. There is no gas cap code. There are a few evap system leak and/or performance codes. You guessed at a gas cap, and that's obviously not it. A ... A lit check fuel cap warning light could mean the fuel cap (or gas cap) isn't installed correctly, the fuel inlet seal has worn out, or the inlet seal is ... Just disconnect the battery for a few minutes, CEL will reset. Otherwise it could take a hundred or so miles. Aftermarket gas caps and Tacomas ... If it detects a loss of pressure in its cycle, the CEL to come on. No biggie, just get a new gas cap. Drive around with it and if it doesn't set ... The gas cap will throw a check engine light if it needs to be replaced, and sometimes it'll cause one because it wasn't tightened enough after ... I've had a weird intermittent check engine/VSC light problem. I've noticed that it comes after getting gas and sometimes goes away after getting gas. Visit Orem Toyota for high-quality Toyota cars, professional car service, and genuine Toyota parts, serving Lindon, Vineyard, Pleasant Grove, and more.