L4-16 code on a MX4141N

[Tonerkiller]

I have a machine with this code. I replaced the fuser and I still have the constant code. Any ideas?

[nanohitmen]

• Description:Fusing pressure release trouble
• Causes:Fusing pressure release sensor trouble. Fusing pressure release motor trouble. Pressure release drive gear and pressure release idle gear trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
• Remedy:Replace the fusing pressure release sensor. Replace the fusing pressure release motor. Replace the pressure release drive gear and the pressure release idle gear. Replace the PCU PWB. Check connection of the connector and the harness.

[mojorolla]

This model has sensors which are prone to failure. You can enter SIM mode and test the motor and the sensor.
If the motor works, but he sensors fails, you generally get a clunking noise as the machine turns the release system shaft.

[Tonerkiller]

This model has sensors which are prone to failure. You can enter SIM mode and test the motor and the sensor.
If the motor works, but he sensors fails, you generally get a clunking noise as the machine turns the release system shaft.

Thank you, I will try that. we are bringing it to the shop.

[Tonerkiller]

It was the sensor on the pressure release motor assy. Thank you.

[RascalMJ]

Thank you, I will try that. we are bringing it to the shop.

...but replacing the fuser didn't solve the issue? Is this assembly separate from the fuser?

[ntbann]

...but replacing the fuser didn't solve the issue? Is this assembly separate from the fuser?

Yes they are separate.

[RascalMJ]

Yes they are separate.

That makes sense then. Thanks

[Nachoman4life]

I have had a handful of these that were due to a failing separation motor, something to keep in mind if it comes back.