Diagnostic Aids

WARNING: This page is about a different car, the 2004 Suzuki Swift + and 2004 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.

Excessive vibration from sources other than the engine could cause DTC P0300 to set. The following are possible sources of vibration:

A tire or wheel that is out of round or out of balance
Variable thickness brake rotors
A unbalanced or damaged driveline condition
Certain rough road conditions
Worn or damaged accessory drive component or belt

For an intermittent condition, refer to Intermittent Conditions .