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HOMESERVICE MANUALSFORD2021TRANSIT-150 XLT, 3.5L ENG VIN 8, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTMEMORY MODULESENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID)DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONSP0301 - CYLINDER 1 MISFIRE DETECTED
2021 Ford Transit-150 XLT, 3.5L Eng VIN 8, AWD

P0301 - Cylinder 1 Misfire Detected

2021 Ford Transit-150 XLT, 3.5L Eng VIN 8, AWDSECTION P0301 - Cylinder 1 Misfire Detected
DTC DESCRIPTION P0301 - CYLINDER 1 MISFIRE DETECTED

Description:  This DTC sets when the misfire detection monitor detects an engine misfire in cylinder 1.
Possible Causes: 
  • Ignition system
  • Fuel injector 1
  • 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:  Misfire is defined as lack of combustion in a cylinder due to absence of spark, incorrect fuel metering, low compression, or any other cause.
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.
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.