Powertrain, generic (extended)

P2591 Cruise Control Front Distance Range Sensor Left

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2591 is reserved for the left front distance sensor in cruise systems that combine several radars across the front; a single or centre unit uses P2583 and the right one P2592. No manufacturer documents P2591 publicly. Honda's bulletins on P2583 show what such a sensor typically reports: a view blocked by ice or dirt, or a misalignment the unit detects itself. A left corner sensor sits behind the bumper cover, so parking knocks, a repainted or replaced bumper, thick paint over the sensor area and bent brackets are prime suspects, before wiring or the sensor itself. CARB cites a cruise control that turns itself off on a detected fault as a diagnostic without emission impact, so a check engine lamp is not to be expected. Adaptive cruise and related assistance remain unavailable.

Likely causes

Bumper cover damaged, replaced or repainted over the left sensor
Left sensor bracket bent, sensor aimed wrongly
Ice, mud or stickers covering the sensor area
Sensor or wiring to the left corner faulty

Symptoms

  • Adaptive cruise control not available
  • Driver assistance warning message

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–1,200
Time0.5–3 h

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

Parts involved

acc radar sensor left

Related codes

P2583P2592

References: law.cornell.edu, static.nhtsa.gov.