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Engine Code P0390 - Camshaft Position Sensor Circuit - Bank 2 Sensor 2

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33K views 27 replies 6 participants last post by renardanderson Jul 22, 2023

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The error code P0390 (Camshaft Position Sensor Circuit - Bank 2 Sensor 2) on a 2019 Jeep Cherokee 3.2L, along with Start/Stop issues and a Service 4WD light, may not be directly related to the camshaft sensor itself. Here's what to check: * **Battery:** Although a new/strong battery was reported, ensure it's the correct AGM type for ESS (Electronic Stop/Start) systems. Duralast Platinum AGM is a suitable option. Also, verify battery terminal connectors are securely tightened. * **Grounding Straps:** Inspect grounding straps for corrosion, especially the ones connecting the battery to the body and the transmission. * **Oil Pressure:** Low oil pressure can trigger the CPS code due to the Pentastar engine's reliance on high-pressure oil for the VVT (cam phasing) system. Check for oil leaks, especially around the oil filter/cooler assembly. * **Camshaft Position Sensor Location:** Bank 2 Sensor 2 is located on the top-right of the valve cover nearest the radiator (front of the car). * **PTU:** In this specific case, the mechanic believed the P0390 code was caused by the PTU going out.

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sanghill

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#22 · Jul 19, 2023

Refer to Post #12 above. Mark_ is the Forum guru for battery issues.

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