What does code P2591 mean?

Q: What does code P2591 mean?

Cruise Control Front Distance Range Sensor Left. P2591 indicates that the cruise control system's front distance range sensor, the radar or lidar unit that measures the gap to the vehicle ahead, has reported a fault to the module that supervises it. The computer has detected an out-of-range or implausible signal from the left-hand front distance sensor, so adaptive cruise control and any forward collision functions that rely on that sensor are disabled or degraded.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2591

P2591Cruise Control Front Distance Range Sensor Left

P2591 indicates that the cruise control system's front distance range sensor, the radar or lidar unit that measures the gap to the vehicle ahead, has reported a fault to the module that supervises it. The computer has detected an out-of-range or implausible signal from the left-hand front distance sensor, so adaptive cruise control and any forward collision functions that rely on that sensor are disabled or degraded.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyProfessional

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.