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HOMESERVICE MANUALSFORD2021TRANSIT-350 XL, 3.5L ENG VIN G, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 510 (ENGINE CONTROLS - PINPOINT TEST DO: BAROMETRIC PRESSURE (BARO) SENSOR THROUGH PINPOINT TEST HC: FUEL DELIVERY SYSTEM - (EXCEPT DIESEL & HYBRID))PINPOINT TEST DY: ENGINE OIL TEMPERATURE (EOT) SENSORTEST PROCEDURE
2021 Ford Transit-350 XL, 3.5L Eng VIN G, RWD

Test Procedure

2021 Ford Transit-350 XL, 3.5L Eng VIN G, RWDSECTION Test Procedure
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2020 Lincoln Navigator, 2020 Lincoln Nautilus, 2020 Lincoln MKZ, 2020 Lincoln Corsair, and 2020 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
  1. DY1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) 

    Is DTC P0298 present? 

    Yes No
    GO to  DY2. RETURN to SYMPTOM CHARTS for further direction.
  2. DY2 ENGINE OIL OVER TEMPERATURE CONDITION 
    NOTE: The engine oil temperature protection strategy in the PCM has been activated. This protects the engine against mechanical damage due to overheating.
    • Check for an overheating condition and base engine concerns.

    Are there any overheating or base engine concerns? 

    Yes No
    ISOLATE the concern. REPAIR as necessary. REFER to the Engine Cooling article to diagnose the overheat symptom.
    Clear the PCM DTCs. REPEAT the self-test.    		 GO to  DY3.
  3. DY3 IDENTIFY THE CUSTOMER'S DRIVING HABITS 
    • Identify the customer's driving habits.
    • Access the freeze frame data (if available) and record the DTC concern conditions.

    Does the vehicle appear to have been driven in an incorrect transmission gear or at high RPM for an extended period? 

    Yes No
    ADVISE the customer that incorrect transmission gear selection and high RPM for an extended period initializes the engine protection strategy.
    Clear the PCM DTCs. REPEAT the self-test.    		 GO to  DY4.
  4. DY4 TYPE OF ENGINE COOLANT SENSOR 
    NOTE: The PCM uses an oil algorithm to infer actual temperature based on input from the engine temperature sensor.

    Is the vehicle equipped with a cylinder head temperature (CHT) sensor? 

    Yes No
    GO to PINPOINT TEST DL . GO to PINPOINT TEST DX .
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When to See a Mechanic

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.