P0589 OBD-II: Cruise Control Multi-Function Input "B" Circuit

P0589 Severity

Moderate

Will P0589 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

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Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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What causes OBD-II fault code P0589?

The Cruise Control System uses several input switches (i.e. Coast and Accelerate) If the engine computer (PCM) sees a signal from more than one switch at a time, code P0589 will set and the cruise control system will be disabled.

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OBD II Fault Code

  • OBD II P0589

OBD-II Code Cruise control will not operate is defined as a Cruise Control Multi-Function Input "B" Circuit

The Cruise Control System uses several input switches (i.e. Coast and Accelerate) If the engine computer (PCM) sees a signal from more than one switch at a time, code P0589 will set and the cruise control system will be disabled.

Cruise control will not operate Symptoms

  • Cruise control will not operate

Common Problems That Trigger the P0589 Code

  • Cruise control switch failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue
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