Hyundai Sonata loss of power and inability to accelerate over 2000 RPM, repeated wiring harness failure on Hyundai Sonata

Some Hyundai Sonata owners report experiencing a loss of power and an inability to accelerate over 2000 RPM, which can stem from several potential issues. Common causes include worn-out or fouled spark plugs that lead to misfires and reduced power, as well as faulty fuel pumps or filters that can cause engine stalling. Additionally, a defective or dirty Mass Air Flow (MAF) sensor may result in uneven engine running and poor performance. Some owners have also reported repeated wiring harness failures, which can limit power steering assistance and complicate shifting out of Park. To mitigate these issues, it is recommended that owners maintain and replace spark plugs regularly, check and replace the fuel filter and pump as needed, inspect and clean the MAF sensor, and address any wiring harness problems promptly. If these measures do not resolve the issues, consulting a qualified mechanic or Hyundai service center is advisable for a thorough diagnosis and repair to ensure vehicle safety and performance.