P0300 and C121C Problem - '06 XK 3.7L

[FLYCAV]

How's your oil level?

Oil level is good.

......... because you have a better chance of getting struck by lighting while you're on your way to collect your mega millions lottery winning than you are to have multiple injectors go bad at the same time to cause P0300.

I just wish the odds of winning the Mega Millions jackpot were more like the odds of my Jeep throwing a P0300 code on the way to pick up a 12 pack.

Normally ECU issues that result in P0300 result in an new ECU, not just programming.

I was afraid of that.

Fuel supply issues could be anything from pressure bleed-off to the pump going bad. Doubtful that its an injector issue because you have a better chance of getting struck by lighting while you're on your way to collect your mega millions lottery winning than you are to have multiple injectors go bad at the same time to cause P0300.

I just might have to invest in that service manual afterall.