P0720

Tests 1 - 2:

Tests 3 - 6:

Tests 7 - 11:

SYMPTOM
P0720 - LOW OUTPUT SPEED SENSOR RPM ABOVE 15 MPH

WHEN MONITORED
Continuously with the key ON, engine running, and gear selector NOT in Park or Neutral.

SET CONDITION
This code will set if the vehicle speed (from the CAB module) is above 24 km/h (15 mph), and the Output Shaft Speed sensor is below 60 rpm for 2.6 seconds.

POSSIBLE CAUSES
- Park/neutral position switch codes present
- Output speed sensor signal (+) circuit shorted to voltage
- Output speed sensor ground (-) circuit shorted to voltage
- Output speed sensor signal (+) circuit shorted to ground
- Output speed sensor ground (-) circuit shorted to ground
- Output speed sensor signal (+) circuit open
- Output speed sensor ground (-) circuit open
- Output speed sensor
- Powertrain Control Module
- Intermittent output speed sensor