P2E04Gear Lever Position Sensor B Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- Sensor B is the second, redundant gear lever position sensor; it measures the same lever travel as sensor A so that a single failure does not leave the driver without range selection. Toyota names it gear lever position sensor B in the floor shift assembly of the Lexus NX, and GM's tables call the equivalent device sensor 2, with X and Y values of its own (P089B to P08A2). P2E04 is the general circuit fault of sensor B, set when its line is open or its signal cannot be read, with no low/high distinction. No maker documents P2E04 itself. GM's patent US9249877 describes the logic behind the pair: if a coordinate of one sensor fails its test, that sensor is ignored and the other decides. A fault here therefore removes the backup, not the function.
- What you may notice
- Warning lamp or shift-system message
- Selector works normally on sensor A alone
- Any further sensor fault can block range changes
- Likely causes
- LikelyConnector or wire of sensor B at the selector loose or damaged
- PossibleSensor B in the selector assembly failed
- RareSeparate supply branch of sensor B interrupted
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.