Trouble code P0303

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Apr 15, 2011 | 02:11 PM

Mach1 Ketchum

Thread Starter

Joined: Mar 2011

Posts: 2

From: California

Trouble code P0303

My scanner kicked the trouble code P0303 for a misfire on cylinder 3 and I'm going to replace it, but which cylinder is that? Driver side or Passenger side?

Apr 15, 2011 | 02:30 PM

cliffyk

TECH SAVANT

Joined: Dec 2006

Posts: 10,937

From: Saint Augustine, FL

Misfire codes do not automatically mean an ignition problem, in fact the PCM has no idea what caused the misfire.

Click here to see how the misfire monitor works;

Click here for what the shop manual says about P0303.

Cylinder 3 is 3rd from the front on the passenger side:

Apr 15, 2011 | 05:16 PM

WhiteFoxGT

Resident Ford Troll

Joined: Jul 2006

Posts: 6,723

From: Delaware

If you can physically feel a miss, its most likely a bad coil. Like cliffy said its not always the case, but I can almost assure you 100% that replacing the #3 coil and plug will fix the issue