1521 code is being thrown on '06 5.7L hemi. Using the recommended 5w20 and frequent oil changes. Only scanned truck when I got an engine light recently due to P0137 Bank 1 Sensor 2 o2 sensor low voltage. Can anybody help with either one of these codes? I have thrown the 1521 before but not sure why. I am also wondering if my exhaust manifold leak (getting a little bit bad - replacing soon) would be enough to throw this o2 code. Thanks guys
Incorrect Engine Oil Code
- Thread starter Lugnutz
- Start date
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hemihustlin
Senior Member
Hilarious. What brand of 5w20 are you using by the way? Must be on he thick side of 20 lol
I run 5w30 all the time and once in a while when i plug the scanner in i see that code and erase it. It never lights the check engine just stays in the background.
Absolutley nothing to worry about. Continue using that oil if it works well for you.
I run 5w30 all the time and once in a while when i plug the scanner in i see that code and erase it. It never lights the check engine just stays in the background.
Absolutley nothing to worry about. Continue using that oil if it works well for you.
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