DTC P0300 - Random Misfire Detected: Condition
WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when ECM input signal from Crankshaft Position (CKP) sensor signal is irregular. Possible causes are:
- Ignition system malfunction.
- Low fuel level.
- Low battery voltage.
- Fuel system malfunction.
- Insufficient compression.
- Incorrect CKP sensor air gap.
- EGR system malfunction.