Powertrain, generic (extended)

P2E07 Gear Lever Position Sensor B Circuit High

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

P2E07 is the high-side circuit fault of gear lever position sensor B: its signal reads above anything the sensor may legitimately produce. An interrupted signal line on an input with pull-up, a short to battery or reference voltage, or a broken sensor ground are the classic causes. No maker publishes P2E07. On the Cadillac XT4 electronic shifter GM monitors sensor 2 axis by axis and sets P089D or P08A2 above 95 % duty cycle, 3 out of 4 samples on a 25 ms loop, Type B. Sensor A carries the selector meanwhile, which is the purpose of the redundancy described in GM's patent. P2E06 is the low fault of the same sensor and P2E03 the high fault of sensor A; both A and B high at once suggests a shared ground or connector.

Likely causes

Signal line of sensor B open
Ground of sensor B broken
Signal line shorted to battery or reference voltage

Symptoms

  • Warning lamp and shift-system message
  • Normal shifting via sensor A
  • With P2E03 present as well, range selection may be blocked

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 bwiring harnesstcm

Related codes

P2E06P2E04P2E03P089DP08A2

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