Transmission fluid temperature sensor: Diagnostics

In the event of a fault in the temperature sensor, three different diagnostic trouble codes may be generated:

• If the temperature increases or decreases too slowly during the first 15 minutes of driving, diagnostic trouble code P0711 will be generated.
• In the event of short to B-, diagnostic trouble code P0712 will be generated.
• In the event of short to B+ or an open circuit, diagnostic trouble code P0713 will be generated.
  Fig 1: Wiring Diagram - Transmission Fluid Temperature Sensor

  Courtesy of SAAB-SCANIA OF AMERICA, INC.
  TRANSMISSION FLUID TEMPERATURE CHART
  
  

  Oil temperature °C	Resistance O +/-10%	Voltage (TCM) V +/-10%
  -10	5000	4.6
  0	2000	4.1
  20	900	3.4
  40	400	2.4
  80	125	1.1
  100	75	0.7
  150	27	0,3