Powertrain, generic · Transmission

P089E Gear Lever X Position Sensor 2 Circuit Intermittent/Erratic

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. P089E, for jumping or briefly dropping X sensor 2 signals, is used by no maker found; GM catches signal disturbances through the frequency error under P089B. The counterpart for sensor 1, P0823, is unused as well.

Likely causes

Loose contact at the selector connector
Sensor 2 with internal dropouts
Wire chafed in the console

Symptoms

  • Selector warning at times
  • Range selection hesitates sporadically

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–900
Time0.5–2 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

P0823P089BP089CP089DP08A3

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