What P0306 means
Diagnostic Trouble Code (DTC) P0306 stands for Cylinder 6 Misfire Detected. This is a generic OBD2 diagnostic trouble code indicating that the engine computer (ECU) has registered an operational anomaly in the powertrain (p) systems.
When this error registers, the ECU records a freeze frame of sensor data and lights up the Check Engine Light on your dashboard to notify the operator of a system fault.
Symptoms of OBD2 Code P0306
When code P0306 is active, your car might exhibit the following common symptoms:
- Heavy engine vibration
- Exhaust sputtering
- Flashing MIL
Common Causes of Code P0306
Faults that trigger this code typically include:
- Cause 1: Failing spark plug or coil pack on Cylinder 6
- Cause 2: Fuel injector circuit problem
- Cause 3: Mechanical valve failure
Can you drive with a P0306 code?
No. Park immediately.
Expected Repair Cost Band
$60 - $250.
Related Diagnostic Trouble Codes
If you have scanned multiple codes, see these related guides for troubleshooting context:
Frequently Asked Questions
What does a Cylinder 6 misfire mean?
It means the cylinder number 6 is failing to complete proper fuel combustion.