SPONSORED LINKS

Codes P0300 and P1518

Tiny
ARGYEL
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • 6.0L
  • V8
  • AUTOMATIC
  • 125,000 MILES
Started with reduced power P0300 misfire problem and a freeze frame fuel trim bank 2 of -54% short term -25%. Check data streams and all was normal O2 sensors all normal so I erase codes and start again and get reduced power P1518. Don't know where to look!
SPONSORED LINKS
Wednesday, September 1st, 2021 AT 5:56 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

What are the long-term trims for both banks while running? They are more important than the short-term trims.

I attached the flow chart for you below of the code with steps to follow. In most cases, it is the throttle body that is the issue for both complaints.

https://www.2carpros.com/articles/how-a-throttle-body-works

Roy

Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, September 2nd, 2021 AT 1:55 AM
Tiny
ARGYEL
  • MEMBER
  • 3 POSTS
Bank 1 was 0 and bank 2 was -1.9.
Was this
answer
helpful?
Yes
No
Thursday, September 2nd, 2021 AT 6:04 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Those readings are correct.

Roy
Was this
answer
helpful?
Yes
No
-1
Friday, September 3rd, 2021 AT 3:12 AM
Tiny
ARGYEL
  • MEMBER
  • 3 POSTS
Did not address my overall problem!
Was this
answer
helpful?
Yes
No
Friday, September 3rd, 2021 AT 5:51 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
What steps did you follow in the flow charts that I left? The flow chart was very specific in tests that needed to be done.

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, September 3rd, 2021 AT 10:41 AM

Please login or register to post a reply.

Related P1518 Content

Sponsored links