Powertrain, generic · Transmission

P089F Gear Lever Y Position Sensor 2 Circuit

Check engine lightOn
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

Gear lever position sensor 2 is the redundant second sensor of an electronic selector lever, next to sensor 1 (P0821 ff), for the X or Y axis. The only documented user is GM's electronic range selection with PWM Hall sensors, as in the Cadillac XT4, and only for range, low and high. Following GM's patent, an invalid sensor is dropped and the other carries on; with both invalid the module can request park. P089F, the general circuit fault of Y sensor 2, is used by no maker found; GM reports that sensor under P08A0 to P08A2. In GM's patent a sensor counts as invalid as a whole once its X or Y value fails.

Likely causes

Wire or connector at the selector module open
Sensor 2 faulty
Corrosion from liquid in the console

Symptoms

  • Gearbox or selector warning in the cluster
  • Range selection delayed or limited
  • Usually still drivable, sensor 1 takes over

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€250–900
Time1–2 h

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

Parts involved

gear lever position sensorelectronic shift modulesensor wiringengine control module

Related codes

P0822P08A0P08A1P08A2P08A5P089A

References: patents.google.com, patents.google.com, gsi.ext.gm.com, law.cornell.edu.