Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the P1390 Jeep code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The Powertrain Control Module (PCM) has detected a misalignment between the cam sensor and crank sensor.
With the engine running, the Powertrain Control Module (PCM) enables the Inhibit condition test every 44 ms and monitors for misalignment between the Camshaft Position (CMP) and Crankshaft Position (CKP) sensors. If the CMP signal is offset from the CKP sensor one tooth or more, this trouble code is set. With a cold engine or if the start-to-run transfer is too long Whenever engine speed is outside of its given windows Whenever there is a large change in MAP sensor input
Need more information on how to fix the P1390 Jeep code? Get Access to Factory Service Manuals
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