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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 391 (Engine Controls - Powertrain DTC Charts & Descriptions - (Hybrid)) >> DTC Diagnosis >> DTC P0301: Misfire Detection Monitor

DTC P0301: Misfire Detection Monitor

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0301 - MISFIRE DETECTION MONITOR

Description:  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, poor fuel metering, poor compression, or any other cause.
Possible Causes: 
  • Ignition system.
  • Fuel injectors.
  • Running out of fuel.
  • EVAP canister purge valve.
  • Fuel pressure.
  • Evaporative emission system.
  • Base engine.
  • Stuck open EGR valve.
  • Blocked EGR passages.
Diagnostic Aids:  The 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 . GO to Pinpoint Test HD .
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