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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 105 (2.4L - DTCS B104D To P0335) >> DTC Troubleshooting >> P0300-Multiple Cylinder Misfire >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ENGINE OIL LEVEL LOW/AERATED OR CONTAMINATED
INCORRECT ENGINE OIL FILTER
INSUFFICIENT OIL PRESSURE DUE TO A MECHANICAL FAILURE IN THE OILING SYSTEM
ENGINE VACUUM LEAK
EXHAUST RESTRICTION
FAULTY IGNITION COIL, WIRING OR SPARK PLUG
FUEL SYSTEM ISSUES (POOR QUALITY OR FUEL PRESSURE ISSUE)
FAULTY FUEL INJECTOR
CRANKSHAFT POSITION SENSOR (CKP) OR TONE WHEEL ISSUES
COOLANT LEAKING INTO A CYLINDER
ENGINE MECHANICAL/LOW COMPRESSION
EXCESSIVE CARBON BUILD-UP OR VALVETRAIN ISSUE
VARIABLE VALVE ACTUATION (VVA) SYSTEM ISSUES
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .