2013 jeep Wrangler with 3.6L was going into limp mode and throwing codes p0642, p2111, p2122. Sent in the pcm to S.I.A. electronics and it tested good so we focused a bit more on the codes and p0642 references a voltage circuit so we decided to start with a visual inspection of the wire harness of the supply voltage. It said circuit F855 so we looked and it was the pink, yellow wire which runs from the pcm C2 connector to the throttle body, crank position sensor, and oil pressure sensor. the throttle body and crank position connectors are easy to inspect but you have to remove the upper and lower intake to inspect the connector for the oil pressure sensor. that is where we found the bare wires that was causing the short. you can buy a one month subscription to your vehicle's service manual on alldata.com to help you out with troubleshooting and procedures. i hope this helps all you jeep peeps! Mopar or no car!!!!
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2013 jeep Wrangler p0642 p2111 p2122 wire short at oil pressure sensor connector
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