Check Engine light P219B code


Asked by Guru6QT46 Mar 26, 2020 at 03:13 PM about the Dodge RAM 1500

Question type: Maintenance & Repair

I have a 2016 Ram 1500 5.7, check engine light comes on and gives a
P219B error code for air/fuel imbalance. I've had this truck to 3 different
dealerships and replaced the downstream oxygen sensor and the intake. Did
not fix it. Dealership is wanting to pull the camshaft. This started in August of
2019. After they checked the code the CEL will go out until I drive the truck
and let it get fully warm, shut it off and let it cool down then drive it again and
let the engine warm back up it will come on again, After 4 or 5 starts it will go

2 Answers


You may have an exhaust manifold leak, a vacuum leak, a MAF or MAP sensor problem, a failing fuel pump, a clogged fuel filter, a problem with the wiring going to the oxygen sensor, or they're replacing the wrong oxygen sensor. The oxygen sensor throwing the code is the upstream oxygen sensor on bank two of the engine. This is the side of the engine where the number two cylinder is. Hope that helps! Jim

2 people found this helpful.

Thank you. They supposedly checked for EVAP system leaks and didn't find anything. They insist they need to pull the camshaft out but I'm reluctant to let them. I'm thinking it's some cheap sensor problem like the fill position sensor or purge solenoid valve.

2 people found this helpful.

Your Answer:

Sell Your Car Yourself

With a simple, secure transaction.

Dodge RAM 1500

I have a different car

Dodge RAM 1500 Experts

  • #1
    Dan Connell
  • #2
  • #3
    G A Arne
View All

Find great deals from top-rated dealersTM


Related Models For Sale

Used RAM 1500
1,619 Great Deals out of 99,293 listings starting at $4,988
Used Ford F-150
2,625 Great Deals out of 127,417 listings starting at $1,600
Used Chevrolet Silverado 1500
1,738 Great Deals out of 91,299 listings starting at $1,399
Used Dodge RAM 2500
45 Great Deals out of 1,498 listings starting at $3,995
Used GMC Sierra 1500
714 Great Deals out of 37,061 listings starting at $1,999
Used Toyota Tundra
516 Great Deals out of 16,361 listings starting at $2,900
Used Toyota Tacoma
816 Great Deals out of 33,247 listings starting at $2,899
Used Dodge Charger
586 Great Deals out of 27,142 listings starting at $2,995
Used Ford F-250 Super Duty
515 Great Deals out of 30,396 listings starting at $2,995
Used Dodge Challenger
491 Great Deals out of 23,368 listings starting at $6,000
Used Chevrolet Silverado 2500HD
277 Great Deals out of 13,328 listings starting at $1,795
Used RAM 2500
300 Great Deals out of 21,373 listings starting at $5,900
Used Chevrolet Tahoe
617 Great Deals out of 21,618 listings starting at $1,950
Used Jeep Grand Cherokee
1,151 Great Deals out of 64,789 listings starting at $1,995
Used Chevrolet Colorado
416 Great Deals out of 18,149 listings starting at $2,795

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.