Powertrain, generic (extended)

P2E02 Gear Lever Position Sensor A Circuit Low

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

P2E02 says the signal of gear lever position sensor A is stuck below the lowest value a healthy sensor can output. Typical reasons: the signal wire touches ground, the reference voltage is missing, or the sensor output has collapsed. No manufacturer publishes P2E02. The closest documented check is GM's per-axis version on the Cadillac XT4 electronic selector (19OBDG03D): X sensor 1 sets P082B, Y sensor 1 P082E, when the PWM duty cycle falls under 5 % in 3 of 4 samples at 25 ms, Type B. CARB 1968.2 (e)(15) asks for out-of-range detection on transmission inputs and keeps circuit and rationality faults under separate codes. The high counterpart is P2E03, sensor B low is P2E06. With a valid partner sensor the lever normally keeps working.

Likely causes

Signal wire of sensor A shorted to ground
Sensor reference voltage missing or pulled down
Sensor A output failed low

Symptoms

  • Warning lamp and shift-system message
  • Lever position shown on the display jumps or is missing
  • If sensor B also fails, no range can be selected

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–900
Time0.5–3 h

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

Parts involved

gear lever position sensor awiring harnesstcm

Related codes

P2E03P2E00P2E06P082BP082E

References: law.cornell.edu, gsi.ext.gm.com, image-ppubs.uspto.gov.