DTC P0726: Engine Speed Input Circuit Range/Performance

2010 Mercury Mariner Hybrid, AWDSECTION DTC P0726: Engine Speed Input Circuit Range/Performance
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
P0726 - ENGINE SPEED INPUT CIRCUIT RANGE/PERFORMANCE

Description:  The transaxle control module (TCM) calculates an engine speed and compares it to the engine speed received from the powertrain control module (PCM). This DTC is set when the RPM difference between the calculated and received speeds is greater than 1,000 RPM.
Possible Causes: 
  • Damaged PCM
  • Damaged TCM
Diagnostic Aids:  The TCM parameter identification (PID) ENGCTO displays the RPM that the TCM received. The TCM PID RPM displays the RPM that the TCM calculated. Both PIDs should match actual engine speed.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Vehicles that start GO to PINPOINT TEST JH .
Vehicles that do not start GO to PINPOINT TEST JD .
RENDER: 1.0x

NO RELATED

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