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I replaced the spark plugs on my 2004 Jeep Liberty now it has a miss, with codes p0300,p0304 and p2311.Replaced them before and had no problems.

Vehicle: 2004,Jeep,Liberty,3.7

1 Answer

Hi there,

Ignition coil D means the #4 ignition coil is showing a problem. This goes along with the misfire code P0304, which is for the #4 cylinder. The P0300 is a random misfire code, But I think it would be safe to replace the #4 ignition coil to solve the problem
by (10.9k points)

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