Fault code, P3425
My engine light came on about 2 days after having my water pump replaced (hairline cracks, bottom hose) and an oil change (90,000 miles). Repair shop used an OEM reader and got the P3425 code. Definition: Solenoid 4 circuit. Explanation: The ECM has detected a fault in the solenoid control circuit. Probable cause: 1- Open or short circuit condition. 2- Faulty MDS 4 solenoid. 3- ECM fault. I usually feel when the MDS activates and notice the drop in RPM's but did not after the water pump replacement. Gas milege has dropped but now after 2 weeks it feels like the MDS is activating again. Had the light reset but is on again. Not sure where to start without getting the intake removed to check MDS 4 solenoid. Any suggestions?
2006 JEEP Grand Cherokee Overland, 5.7 Hemi MDE