Powertrain, generic · Transmission

P0992 Transmission Fluid Pressure Sensor/Switch F Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

General circuit fault of a sixth transmission pressure sensor or switch, labelled F. No manufacturer documents this code publicly, and no gearbox with a switch F was found. GM's six-speeds stop at TFP switch 5 (letter E, P0989/P0990), and Mitsubishi's 2019 six-speed monitors its 2-6 brake, high clutch and low-reverse brake switches under P0846, P0876 and P0988, which are letters B, D and E. Pressure switches like these sit in the valve body module and tell the module which clutch is applied; Sonnax describes them as normally closed film-and-piston switches. P0992 would be the code for an open or implausible circuit without a low/high split, as CARB requires circuit checks on transmission inputs. Range/performance, low, high and intermittent are P0993 to P0996.

Likely causes

Open or damaged signal wire or connector to the switch
Pressure switch or sensor failed inside the valve body module
Transmission control module input fault

Symptoms

  • Warning light depending on manufacturer calibration
  • Harsh or delayed shifts
  • Possible limp mode with a fixed gear

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–1,500
Time1–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

tfp sensor fwiring harnesstcm

Related codes

P0993P0994P0995P0996P0987

References: law.cornell.edu, sonnax.com, mitsubishitechinfo.com, saabwisonline.com.