DTC P0721: Output/Turbine Speed Sensor Circuit Malfunction

POSSIBLE SOURCE(S): 

NOTE: This DTC is non OBDII but is included for reference to P1720.
• Output speed sensor signal faulty.
• Harness fault.
• Connector pin(s) bent, loose or corroded.
• Damaged harness screen.

  ACTION(S) TO TAKE: 

  • Go to PINPOINT TEST E  .