So on monday the following error codes appeared on my car. Any ideas what needs to be replaced off the error codes?


P0300 Random/Multiple Cylinder Misfire Detected 2014-02-04 13:48:29
P0301 Cylinder 1 Misfire Detected 2014-02-04 13:48:29
P2030 No Description Available 2014-02-04 13:48:29
P3030 No Description Available 2014-02-04 13:48:29
C0033 No Description Available 2014-02-04 13:48:29
P0603 Internal Control Module Keep Alive Memory (KAM) Error 2014-02-04 13:48:29
C1400 No Description Available 2014-02-04 13:48:29

 

Can we assume that you used a "Generic" scantool or code reader? I don't believe that the P2030 and P3030 codes are actually valid, and the "C" codes are Chassis codes.
The P0300 code was set because the ECM has detected one or more misfiring cylinders. The P0301 has been set because the ECM has detected a fault of the #1 cylinder ignition circuit (usually caused by a failing coil). Did you have the Traction Control and/or Vehicle Stability Light illuminate as well at any time? I believe that if you correct the misfire issue that the other codes will not reappear.
The "C" codes do seem odd. Could your car have been "attacked" by mice or rats? They do love to chew on electrical harnesses.
Unfortunately the # 1 cylinder ignition coil access is obstructed by the intake plenum and a sheet metal bracket.
If you a not really mechanically inclined this might be a job for a reputable dealer or shop.

 

Yes the check VSC light has been on went to orielly's and they told me coil d has failed. Going to goto Lexus in the morning . Thanks again

 

If this was my car, I would replace the coil #1 and clear the codes...