OBD-II code · Powertrain (generic, extended)

P2744 Transmission Fluid Temperature Sensor B Circuit Intermittent

The second transmission fluid temperature sensor signal jumps or drops out intermittently. Loose connector or chafed wire.

Is it safe to drive with P2744?

Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.

Common causes

  • Most likelySensor connector not fully seated
  • PossibleHarness chafed against transmission housing
  • Less likelyConnector with intermittent contact under vibration

Symptoms

  • Check engine or transmission warning light on
  • Harsh, delayed, or missing shifts
  • Possible limp mode (locked in one gear)
  • Slipping or shuddering during gear changes

Repair at a glance

Difficulty
Easy
DIY friendly
Often, with basic tools
Typical labour
0.5–2 h
Emissions test
Usually unaffected
Parts involved
Trans Fluid Temp Sensor B, Wiring Harness

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.