What does code P3441 mean?

What does code P3441 mean?

cylinder 6 deactivation intake valve control circuit
OBD error code P3441 indicates problems with the cylinder 6 deactivation intake valve control circuit. The PCM, also known as the powertrain control module is responsible for monitoring the intake valve for cylinder 6. It will set this error code when it faces issues with turning on or off.

How can I fix code P3449 on a Denali?

What repairs can fix the P3449 code?

1. Check the onboard computer in the vehicle for the code, reset the code, run the vehicle and see if the code returns.
2. Replace the intake and exhaust valves.
3. Check the diagnostic computer to make sure it is working properly, and replace if needed, although this is rare.

How do I fix code P3401?

What repairs can fix the P3401 code?

1. Replacing the solenoid for cylinder number one.
2. Repairing the connector pins for corrosion or loose connections.
3. Replacing an ECM.

What is a MDS solenoid?

Operation: During MDS operation the same four cylinders are always shut down. The solenoid directs oil pressure to the lifters for that cylinder, which pushes in the locking pins that allow the lifters to collapse so they no longer open the valves. The PCM will also shut off fuel and spark to the cylinders.

How do I know if my MDS solenoid is bad?

7 Common 5.7 Hemi MDS Problems

1. Ticking Noise. The infamous Hemi ticking sound.
2. Lifter Problem. If you’ve successfully determined that you do not have an exhaust leak, then it might be an internal problem.
3. DMS Problem.
4. Dropped Valve Seat.
5. MDS Turning On And Off.
6. Obnoxious Noise.
7. Vibration.

Is MDS bad for engine?

Is MDS bad for the engine? No, the MDS is not bad for your engine. The whole idea behind this system to actually to improve fuel efficiency. The only complaint about the MDS is that drivers can only use four cylinders instead of eight.

How do you know if MDS is working?

There is no display to tell you MDS is active or not, it’s all feel and sound. It is VERY easy to tell when it drops to 4 cylinders if you have a really loud exhaust, motor sounds completely different.

Can you drive with a bad MDS solenoid?

YES you can drive the car without damage.

Why is MDS bad?

The Hemi 5.7 has eight cylinders, but some cylinders must be shut off to improve gas mileage. That’s what the MDS does. The MDS can be problematic at times, and some of the issues drivers experience are meant to be “features,” including vibration and sometimes poor performance.

Is MDS bad for your engine?

Do all Hemis have MDS?

All hemis in the 1500 built after 2006 have the MDS. The only exceptions to this is the mega cab which is a 2500 chassis and the non-mds HD engine.

How do I know if MDS is working?

What does code P3441 mean? cylinder 6 deactivation intake valve control circuit OBD error code P3441 indicates problems with the cylinder 6 deactivation intake valve control circuit. The PCM, also known as the powertrain control module is responsible for monitoring the intake valve for cylinder 6. It will set this error code when it faces…