LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2012 >> Explorer Limited, 3.5 8, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 321 (Engine Controls (Except Diesel & Hybrid) - DTC P0210 - P05C0) >> DTC P0301-P0309: Cylinder X Misfire Detected

DTC P0301-P0309: Cylinder X Misfire Detected

WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2013 Lincoln Navigator, 2013 Lincoln MKZ, 2013 Lincoln MKX, 2013 Lincoln MKT, and 2013 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
DTC P030X: CYLINDER X MISFIRE DETECTED

Description: 
NOTE: x represents cylinder numbers 1 through 9.
The misfire detection monitor is designed to monitor engine misfire and identify the specific cylinder in which the misfire has occurred. Misfire is defined as lack of combustion in a cylinder due to absence of spark, incorrect fuel metering, low compression, or any other cause.
Possible Causes: 
  • Ignition system
  • Fuel injectors
  • Running out of fuel
  • EVAP purge valve
  • Fuel pressure
  • Evaporative emission system
  • Exhaust gas recirculation (EGR) system
  • Base engine
  • Misfire monitor neutral profile correction has not been relearned since the last mechanical repair
Diagnostic Aids:  The malfunction indicator lamp (MIL) blinks once per second when a misfire severe enough to cause catalyst damage is detected. If the MIL is on steady state due to a misfire, this indicates the threshold for emissions was exceeded and caused the vehicle to fail an inspection and maintenance tailpipe test.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST HD .
scientia non olet · About LEMON Manuals