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PO300 code

Tiny
MARKUS88
  • MEMBER
  • 2004 CHRYSLER SEBRING
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 159,000 MILES
Car is randomly misfiring, idles rough, but drives okay at normal speeds. Do you know if this car has a known issue with this code p0 300? I have replaced plugs, wires, and air filter. Can the air intake throw this code? Or coils throttle body or crank shaft sensor?
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Saturday, October 13th, 2018 AT 6:41 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

This can be caused by low fuel pressure or a bad MAP sensor. Here is a guide to help you check the fuel pressure and a diagrams below to show you where the MAP in the diagrams below. Also I would service the throttle bore as well.

https://www.2carpros.com/articles/throttle-actuator-service

and

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

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Monday, October 15th, 2018 AT 12:40 PM

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