2020年9月7日 · A stored code P3400 means that the powertrain control module (PCM) has detected an abnormality in the cylinder deactivation system (called MDS on the Hemi) for engine bank one. Bank 1 denotes the bank of the engine which contains the number one cylinder.

2024年2月19日 · Good morning, I have 2007 ram 5.7 and it threw the code p3400 checked it said mds? i have had this since new and never knew it had this. the truck is jumping back and forth like the mds is trying to work, but very violently. any ideas on how to remedy this thanks.

2023年2月3日 · Just bought her. P3400 Code after check engine light came on. Looking for advice. What I know right now; Most likely MDS issue, leaning towards likelihood being Solenoid problem. Possible blockage in oil passageways, lifter problems, or oil pressure sensor. Hoping someone will be able to zero in...

2013年10月27日 · Cylinder deactivation bank 1 came in last night, and cylinder bank deactivation 2 came in this morning. I have an 09 ram 1500 crew cab with 82000 miles. Anybody got some input on why these codes keep coming in? Research shows that it could be oil, but we put some in last night and this code came in this morning. Any help or advice would be welcome.

2019年12月20日 · There was never a code for P0340 or P3400 before I changed the MDS solenoid. The code was for Misfire in cylinder #6, cant remember the code exactly. But I changed the MDS solenoid and it fixed it for a few days. When this engine light came on last night I immediately felt the engine chug.

2015年12月2日 · Good morning, everyone. I'm having a few issues with my 2012 Ram 1500 Hemi CC. The truck spends most of its time in the garage and only has around 60k miles on it. For the last few months I've been getting a P3400 CEL for Cylinder Deactivation System Bank 1 but I've just been manually turning it...

Joined Jun 18, 2017 Posts 84 Reaction score 45 Ram Year 2016 Engine 5.7

2024年12月18日 · I was only a couple of miles from home so I went back home and checked the codes (p3400 cyl deactivation bank 1, p0304 #4 misfire, and p1414). Stupidly I did an oil change (redline) yesterday 12/17 thinking it might help because the truck had occasionally thrown a p0304 code when I was due for an oil change. No change. Truck has about 155k miles.

2021年2月26日 · Just putting this here as a learning lesson for me and hope this can find the way to any other hobby mechanic out there trouble shooting this code. I had replaced my oil at 98k and at 102k, the check engine came on and gave a code P1524. This is a low oil pressure for the MDS system and there isn't enough of oil pressure to engage the system.

2021年3月17日 · I'm having the same issue. Replaced the gas cap twice, because that always worked in the past, but code will not go away. I traced all the lines and found no noticeable leaks. I also set my compressor to 5 psi and pressurized the hose from the engine side and inspected all the lines with a bubble solution with no luck finding a leak.