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P2591 Chassis

Cruise Control Front Distance Range Sensor Left

General fault on the left-side front distance-range sensor used by adaptive cruise. Multi-sensor radar arrays use left/center/right sensors for wider field-of-view and lane discrimination — without left, ACC may degrade to single-target tracking.

Affected components

  • Acc radar sensor left

Common causes

  • High likelihood: Dirty sensor surface
  • Medium likelihood: Sensor misaligned after a frontal impact

Diagnostic notes

  • The malfunction indicator lamp may illuminate

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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