2006 Ford Crown Victoria Police InterceptorFACTORY OEM SERVICE PROCEDURE

Speed Control

POWERTRAIN CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTCs Source Perform Test
P0500 Vehicle Speed Error REFER to AUTOMATIC TRANSAXLE/TRANSMISSION .
P0579 Cruise Control Multi-Function Input A Circuit Range/Performance GO to PINPOINT TEST C .
P0581 Cruise Control Multi-Function Input A Circuit High GO to PINPOINT TEST C .
P0720 Insufficient Input from Output Shaft Speed Sensor REFER to AUTOMATIC TRANSAXLE/TRANSMISSION .
P0721 Noise Interference on Output Shaft Speed Sensor Signal REFER to AUTOMATIC TRANSAXLE/TRANSMISSION .
P0722 No Signal from Output Shaft Speed Sensor REFER to AUTOMATIC TRANSAXLE/TRANSMISSION .
P1572 Brake Pedal Switch Circuit GO to PINPOINT TEST B .
P1703 Brake Switch Out of Self-Test Range GO to PINPOINT TEST B .
All other DTCs - REFER to the INTRODUCTION - GASOLINE article.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.