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That is a MAP sensor code, check to see if the sensor is returning at least .5 volts, if not check for 5 volt reference voltage on the connector.

If you have voltage going in, and none or less coming back out replace the sensor, if no reference voltage check the connectors, wiggle them and monitor the voltage.

If the wiggle test checks out, draw a vacuum on the MAP sensor vacuum port. As you add vacuum the voltage should decrease. With no vacuum, the MAP sensor should read around 4.5 volts. If there is no change in MAP sensor reading on the scan tool, replace MAP sensor.

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Q: How do you fix a P0107 code on a 1998 Jeep Wrangler 4.0?
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