Check engine light on

Tiny
THANH808
  • MEMBER
  • 2015 CHEVROLET SUBURBAN
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 61,500 MILES
Hi every one, my name is Alan from (Honolulu). I have an SUV my engine light came on two weeks ago, then take dealership services, the dealership check out is problem, (bank 2 sensor 1 oxygen sensor) is problem, too rich and lean. I have change new oxygen sensor, am say good find out the problem, just go for it to change new oxygen sensor. After five days of driving ( engine light back on again), then take back dealership ask why my engine light back on again, after they check same problem again (bank 2 sensor 1 oxygen sensor ). They known change new one two weeks ago. Also, they said it will turn off by itself.
Thursday, November 17th, 2016 AT 11:07 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It wont turn off by itself you need a scanner to do it. check fuel pressure with a gauge it may be a pressure problem. auto parts rent gauge see link.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

have them scan for codes and get back with correct code.
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Friday, November 18th, 2016 AT 7:23 AM

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