Code P1521, oes this code really usually indicate the wrong type of oil or dirty oil?

Tiny
DIVIDES
  • MEMBER
  • 2009 CHRYSLER 300
  • V8
  • 140,000 MILES
Hemi engine. Does this code really usually indicate the wrong type of oil or dirty oil?
Sunday, November 7th, 2021 AT 2:52 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

Absolutely, it does. It could be the viscosity is incorrect, the wrong type of oil, or excessive dirt. Any of the aforementioned conditions can create a problem with the multi-displacement system (MDS). The MDS is designed to deactivate certain cylinders when power isn't needed. As a result, it improves efficiency.

Below are the diagnostics and description of the code.

I hope this helps. Let me know if you have other questions.

Take care,

Joe

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Sunday, November 7th, 2021 AT 9:45 PM

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