Powertrain, generic · Transmission

P0915 Gear Shift Position Circuit A Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Plausibility fault of the gear shift position signal on circuit A in an automated manual gearbox. The voltage stays within its electrical limits, but the reading does not fit: the signal does not change while the shift actuator moves, or the engaged position does not match the learned gear positions. No manufacturer documents this code in freely citable material. A Nissan/Aichi patent points out that sensor brackets on shift forks can deform under vibration and spoil the reading, and an Aisin AI patent describes the fallback when a stroke sensor can no longer be trusted. CARB requires rationality checks on such inputs. P0914, P0916 and P0917 are the electrical faults, P0919 a shift movement that misses its target. Shifting becomes limited or stops.

Likely causes

Worn or drifting shift position sensor, redundant tracks disagree
Bent sensor bracket or displaced magnet on the shift rod
Gear positions not relearned after actuator or TCM replacement
High resistance at connector pins distorting the signal

Symptoms

  • Check engine or transmission warning light on
  • Gearbox drops to neutral while driving
  • Gears refused or engaged only after a delay

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–1,500
Time0.5–4 h

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

Parts involved

gear shift position sensor awiring harnesstcm

Related codes

P0914P0916P0917P0918P0919P091B

References: law.cornell.edu, patents.google.com, patents.google.com.