C1559 on Kia: How to Diagnose & Fix
Lost Communication of Wheel Speed Information
1 Kia model · 1 documented issue
C1559 on Kia by model: symptoms, diagnosis and fix
The Advanced Driver Assistance Systems on the K5 — including Lane Keep Assist, Forward Collision Avoidance, and Blind Spot Monitoring — intermittently throw calibration faults and disable themselves.
Common Symptoms
- Lane Keep Assist warning light and system disabled
- Forward Collision warning malfunction message
- Blind Spot Monitor not functioning
- Multiple ADAS warning lights on dashboard
How to Fix
For intermittent faults in normal conditions: clean the windshield interior and exterior thoroughly around the camera area. Ensure the camera lens cover behind the rearview mirror is clean and unobstructed. After windshield replacement, ALWAYS have the ADAS camera recalibrated at a Kia dealer — this requires specialized targets and equipment.
Owner tips & cautions
- WarningIf you get your windshield replaced, INSIST on ADAS recalibration. The camera must be recalibrated to the new windshield or your safety systems will not function correctly. Budget $300-$500 for this.
Sources for this issue (4)
- Kia TSB ELE 216 / Service Action SA442: Multifunction Camera (MFC) Replacement, 2021MY K5 (DL3a)tsb
- Kia PITSTOP PS704: Front Radar Sensor Mounting Inspection (NHTSA TSB 10200525), listed for 2022 K5tsb
- 2021 Kia K5 Forward Collision Avoidance Warnings complaints (NHTSA complaint mirror)owner-reports
- 2023 Kia K5 Forward Collision Avoidance Warnings complaints (NHTSA complaint mirror)owner-reports
C1559 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C1559 mean on a Kia?
C1559 stands for "Lost Communication of Wheel Speed Information." C1559 is a manufacturer-specific chassis code (documented on Mitsubishi) indicating the control module lost the wheel-speed data it normally receives over the communication network or sensor circuit. Wheel speed information is essential for ABS, traction control, and stability control, so when it is missing those systems are disabled and warning lights come on. Normal braking remains, but anti-lock and stability assistance may not function. Confirm against the factory manual since definitions vary by maker. On Kia it is documented across 1 model: K5.
What are the most common causes of C1559?
The most common causes of C1559 are: Faulty wheel speed sensor or its circuit, Loss of communication on the CAN/vehicle network, Damaged wiring or connectors, Corroded or loose module connectors, Failing ABS/stability control module, Low system voltage or poor ground. The specific cause varies by vehicle.
How much does it cost to fix C1559 on a Kia?
Repair costs vary widely with the root cause and Kia model; each issue on this page carries its own estimate where one is published.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.