P0300 CODE

  • Tiny
  • vitfamily
  • 1999 Volvo S70
  • 5 CYL
  • FWD
  • automatic
  • 155,000 miles

Hi, we just recently purchased a 1999 S70 turbo. I keep getting a random misfire code.

During some acceleration and during some sustained RPM's the Check engine light will flash and then read as a P0300 code. While observing the engine under run when the code flashes the Fuel System 1 will display OL Fuel system Fault then OL fuel system drive. Then the engine will idle fine and the light will no longer flash.

I did change the spark plugs with OEM plugs. And cleaned the MAF. Any other help you can give me would be appreciated.

Wednesday, December 15th, 2010 AT 2:11 PM

1 Answer

  • Tiny
  • Docfixit
  • Expert
  • 18,991 posts

Suspect fuel delivery problem have fuel pressure checked.

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Wednesday, December 15th, 2010 AT 2:18 PM

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