GM OBD Trouble Code 59

Trans Fluid Temperature sensor circuit error (high voltage)

The ECM monitors the transmission fluid temperature sensor and can adjust the transmission operation based on the fluid temperature. If the circuit is open code 59 will set.

Fault Code Description

  • 59 -Trans Fluid Temperature sensor circuit error (high voltage)


  • Check engine light may be on

Common Problems

  • Transmission temperature sensor

Related Questions

See what others have asked about this, or visit the Questions page to ask your own question.
My transmission is not working is this common with ford taurus? also what's a good estimate on a new one installed...
What type of transmission fluid should i use. 1990 i check the fluid in park when running or in drive. ...