P0301 - Cylinder 1 Misfire Detected

The Crankshaft Position (CKP) sensor circuit is monitored by the Powertrain Control Module (PCM). From the data received from the CKP sensor, the test fails if a fluctuation is detected by the PCM when cylinder 1 is to fire.

Possible Causes:
- Improper spark plug
- Insufficient compression
- Incorrect fuel pressure
- Exhaust Gas Recirculation (EGR) valve
- The injector circuit is open or shorted
- The injector
- Intake air leak
- Lack of fuel
- The ignition secondary circuit is open or shorted
- Drive plate
- Front HO2S
- Incorrect distributor rotor

Diagnostic Aids:
Perform a cylinder balance test. Number one cylinder should respond.