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Home >> Ford >> 2020 >> Fusion Titanium Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 75 (Engine Controls - Powertrain DTC Descriptions (Except Diesel & Hybrid) - DTC P0610 - P2149) >> DTC P0721 - Output Shaft Speed Sensor Circuit Range/Performance

DTC P0721 - Output Shaft Speed Sensor Circuit Range/Performance

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DTC DESCRIPTION P0721 - OUTPUT SHAFT SPEED SENSOR CIRCUIT RANGE/PERFORMANCE

Description:  This DTC sets when the OSS sensor signal input exceeds the calibrated threshold or has excessive electrical noise. The OSS signal is very sensitive to electrical noise. This electrical noise distorts the OSS input to the PCM.
Possible Causes: 
  • Incorrect OSS wiring harness routing
  • Aftermarket accessories
  • OSS wiring damaged
  • OSS wiring insulation wear
Diagnostic Aids:  Check the routing of the OSS wiring harness.
Check the OSS wiring and the OSS connector for damage.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Manual Transmission GO to PINPOINT TEST DP .
Automatic Transmission Refer to the Automatic Transmission article, to continue diagnosis.