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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2050 (Engine Controls - Diagnostic Subroutines - 6.4L 99R Diesel -- F250-F550 Super Duty) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P123C - Cold Start Turbo Protection - Forced Limited Power

P123C - Cold Start Turbo Protection - Forced Limited Power

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P123C - COLD START TURBO PROTECTION - FORCED LIMITED POWER

Description:  This DTC will set when the vehicle is started in temperatures below -26°C (-14.8°F). The vehicle will operate at reduced power to prevent damaging the turbocharger due to lack of lubrication. The vehicle will not operate at full power until the engine has had 30 seconds to warm up. A count down timer is indicated on the instrument cluster to notify the driver when the engine is warmed up and operating at full power. The DTC will clear from the PCM when 40 key cycles have been completed.
Possible Causes: 
  • Block heater concerns (if equipped)
  • Starting the vehicle in temperatures below -26°C (-14.8°F).
Diagnostic Aids:  This is an informational DTC and is set as the result of Limited Operating Strategy (LOS) or Failure Mode Effects Management (FMEM) operating strategy that maintains limited vehicle function in the event of the PCM, TCM, TBCM, or component failure.
Application    Key On Engine Off  Key On Engine Running  Continuous Memory 
All   Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.