P056B OBD-II: Cruise Control "Decrease Distance" Signal
P056B Severity
Will P056B 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.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
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.
What causes OBD-II fault code P056B?
Adaptive cruise control uses multiple sensors to monitor what is going on in front of the driver to allow for either a driver warning or automatic braking based on the distance between your vehicle and the vehicle in front you. If there is an issue with one or more of these sensors, code P056B will be set and the cruise control system will be disabled.
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OBD II Fault Code
- OBD II P056B
OBD-II Code Cruise control will not operate is defined as a Cruise Control "Decrease Distance" Signal
Adaptive cruise control uses multiple sensors to monitor what is going on in front of the driver to allow for either a driver warning or automatic braking based on the distance between your vehicle and the vehicle in front you. If there is an issue with one or more of these sensors, code P056B will be 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 P056B Code
- Debris (snow/mud) blocking the sensors
- Radar sensor failure
- Wiring issue
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