2019 check engine light
Thread Starter
|
Mountain Pass
Joined: Jan 2020
Posts: 232
Likes: 99
2019 check engine light
Hey guys, I started my truck this morning and noticed the check engine light staying. Not blinking, just on. So I'm only at 250 miles on the odometer, it's a 6.2 gas. The truck runs and shifts flawlessly, I'm wondering, I bought the truck out of Boise area and they filled it for me. I live at sea level here in Oregon. Is the gas less octane in Boise ? And could that cause a light? I plan to run over to Napa and borrow there code reader after work. But just wanted your thoughts, thx!!
Posting Guru
Joined: Feb 2018
Posts: 1,555
Likes: 516
It's not a fuel octane issue. The only sensor for that is the knock sensor and all that happens there is the computer adjusts timing until the knock goes away. The only time the engine light will blink is when something is occurring that will destroy the catalytic converter. The steady light means something isn't right in your emission control system. It could be one of hundreds of things. Some will put you on the side of the road, but most won't do that. You can scan for the code, but unless something just came unplugged and you can identify it, you're going to take the truck to the dealer for a warranty repair.
Edit: I want to add that no matter what, DO NOT erase the code that set the light. Erasing the code will never, ever fix the problem. If you erase the code to turn off the light, you erase the code, the code history, the freeze frame data, and pending codes. If you turn off the light and then take the truck to the dealer, they'll just tell you to come back when the light is on. Also, if what turned on the light was a hiccup that won't be coming back, the light will turn itself off, usually after two drive cycles.
Edit: I want to add that no matter what, DO NOT erase the code that set the light. Erasing the code will never, ever fix the problem. If you erase the code to turn off the light, you erase the code, the code history, the freeze frame data, and pending codes. If you turn off the light and then take the truck to the dealer, they'll just tell you to come back when the light is on. Also, if what turned on the light was a hiccup that won't be coming back, the light will turn itself off, usually after two drive cycles.
Logistics Pro
Joined: Apr 2000
Posts: 4,334
Likes: 306
From: Mills River
Boise is at 2700 feet elevation, so I suspect their “regular” gas is 87 AKI, just like yours on the Oregon coast.
Check your truck’s gas cap before going over to NAPA; see OM pages 194 and 188.
Finally, what is your truck’s trim level (I.e., XLT or Lariat)? Warning indicators vary between trim levels.
HTH,
Jim / crewzer
Check your truck’s gas cap before going over to NAPA; see OM pages 194 and 188.
Finally, what is your truck’s trim level (I.e., XLT or Lariat)? Warning indicators vary between trim levels.
HTH,
Jim / crewzer
Senior User
Joined: Sep 2018
Posts: 157
Likes: 2
I had my check engine light come on twice in a year. Both times, I had just filled up with gas and parked downhill. My code reader said it was something to do with the evap system. I cleared the code and had no problem.
Senior User
Joined: Sep 2018
Posts: 157
Likes: 2
I had the XL trim as well. If you get an inexpensive bluetooth OBD II reader and download an app on your phone, you'll be able to read the codes and turn off the CEL
Trending Topics
Logistics Pro
Joined: Apr 2000
Posts: 4,334
Likes: 306
From: Mills River
OK. I believe (not 100% sure) that the Lariat+ trim levels with the high-res instrument display get a “loose fuel cap” display icon.
I hope you’ll update is on the resolution.
Safe travels,
Jim / crewzer
I hope you’ll update is on the resolution.
Safe travels,
Jim / crewzer
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Tuned
Joined: Nov 2019
Posts: 290
Likes: 19
From: NE Washington
Code P0456 indicates a small leak detected in the Evaporative Emissions (EVAP) system. The evaporative emissions (EVAP) system is designed to prevent fuel vapors from escaping into the atmosphere.
Another words Gas cap.
Another words Gas cap.
Tuned
Joined: Nov 2019
Posts: 290
Likes: 19
From: NE Washington
It never did on mine.I bought this so I could clear the code to see if the new gas cap worked, and it did.
Thread
Thread Starter
Forum
Replies
Last Post
Snoddy
1987 - 1996 F150 & Larger F-Series Trucks
1
Oct 23, 2018 07:21 AM