Po300 code

2004 CHRYSLER SEBRING
159,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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MARKUS88
  • MEMBER
  • 2 POSTS
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?
Oct 12, 2018 at 11:41 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,051 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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Oct 15, 2018 at 5:40 AM
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