Fix code P2122 P2138 P2127 Sante Fe
If you own a Hyundai Sante Fe and encounter P2122 P2138 P2127 codes, head right for the accelerator pedal sensor (APS), also known as the Gas Pedal. Using a digital multimeter, check for 5 volts at the green wire at terminal 8. Next, check for ground at the black/white wire at terminal 7. Then check for .3-.8 volts at the white wire (with your foot off the pedal) and 4-5 volts with the pedal fully depressed. Wiggle the wiring harness and connector while monitoring the voltage on the white wire. If it varies with movement, fixes the wiring harness or connector. If any of the voltages are off, replace the APS.
© 2012 Rick Muscoplat