Powertrain, generic · Transmission

P082D Gear Lever Y Position Sensor 1 Circuit Range/Performance

Check engine lightOn
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

Gear lever X and Y position sensors detect a selector's position in two directions: on an H-gate shift and select direction (a LuK patent uses two sensors about 90° apart), on a shift-by-wire lever its two axes. P0820 covers the whole X-Y circuit, P0821–P0824 and P082A–P082F sensor 1, P089A–P08A3 a redundant sensor 2. GM uses P082A–P082F on its electronic range selector (2019 tables, Cadillac XT4, 2025): a Hall sensor delivers a PWM signal, measured as duty cycle. P082D is P082A for the Y axis: the Y position lies outside the lever's path (5.5 % equals about 100 N), the PWM signal has a frequency error, or Y sensors 1 and 2 differ by more than 12 %; 3 of 4 samples in 2019, 10 of 12 in 2025 with an added angle check. Type B, MIL after two trips.

Likely causes

Selector assembly faulty (Hall sensor, magnet, worn mechanism)
Connector or wire with resistance or interference (frequency error)
Lever mechanically blocked (object in the console)
Engine or selector module software

Symptoms

  • Check engine lamp after two trips (GM)
  • 'Shift to park' message or transmission warning
  • Range selection restricted; with both sensors failed the vehicle goes to park

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€200–900
Time0.5–2 h

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

Parts involved

gear lever position sensorelectronic range selectorsensor wiringtransmission control module

Related codes

P082AP082EP082FP0822P0824

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