TOYOTA P CODES (POWERTRAIN) P0300 - P0399

When I Started Up The Car In The Morning (cold) 45 Degrees. The Check Engine Light Came On. P0300, P0301, P0302, P0303, And P0304 Showed...

Hi. We Diagnosed The Car 2009 Toyota Rav4 And It Showed The Engine Code P0343. It Says Camshaft Position Sensor A Circuit Input (bank 1) Or...

I Purchased New Spark Plugs (ngk (4589) Ifr6t-11 Laser Iridium Spark Plug) Now It's Throwing Multiple Misfire Codes P0300, P0302...

My Car Is Actually A Lexus Ct200h, But Since That Model Wasn't Listed I Entered Under A Toyota Prius Of The Same Year - 2012. A Few...

My Vehicle Continues To Throw P0300 Code At About 2,600 Rpms. I Have Checked Compression And All Cylinders Are At Or Above 100 Psi, Except...

Hi-i Am Still Trying To Diagnose The Above Mentioned Codes (the Frustrating Po 300) Random Mis-fire. The Po302 Narrowed This Down I Thought...

The Car Will Run Fine For 10 To 20 Minutes Then The Check Engine Light Comes On & It Starts To Vibrate. Had It Checked For Codes Got: P0300...

I Went Through A Large Puddle That Com Pletely Covered The Underside Of The Car. Car Ran Poorly Immediately After. I Ran A Test And Got...

I Have Been Working On This Diagnosis For Over 1 Yr, -eliminating As I Go Plugs Replaced (ngk Iridium), Coils Replaced Denso Import Direct...

What Are The Possible Causes Of A P0301, Misfire In Cylinder 1? I Need To Keep The Mechanic Honest.