Powertrain, generic · Transmission

P089D Gear Lever X Position Sensor 2 Circuit High

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. GM sets P089D when the duty cycle of X sensor 2 rises above 88 % (2019) or 95 % (XT4 and 2025): open signal wire with pull-up, short to voltage or a sensor stuck high. Type B, MIL after two trips.

Likely causes

Signal wire open (pull-up) or shorted to voltage
Sensor 2 faulty
Sensor ground open

Symptoms

  • MIL after two trips
  • Gearbox or selector warning in the cluster
  • Usually still drivable, sensor 1 takes over

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€200–900
Time0.8–2 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

P082CP089AP089BP089CP08A2

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com.