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Daniel Wilson
Daniel Wilson,
Category: RV
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Experience:  Owner at DJ Wilson
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Had a fault code and check engine light on my 2006 Travel

Customer Question

Had a fault code and check engine light on my 2006 Travel Supreme motor home with a 500HP Cummins - MID 128 Engine PID 411 FMI 0. When I shut the engine off and restarted the check engine light was gone. Can you tell what the fault code is?
JA: We'll do all we can to help. Is there anything else the Heavy Equipment Mechanic should be aware of?
Customer: This occurs when climbing a hill under heavy load.
JA: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Equipment Mechanic I'm going to connect you with knows all the tricks and shortcuts. OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Heavy Equipment Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: RV
Expert:  Daniel Wilson replied 1 year ago.

Hi my name is***** will be glad to help. What is the complete engine model from the ID tag?

Expert:  Daniel Wilson replied 1 year ago.

Fault Code 2359: EGR Differential Pressure Sensor – Data Valid but More Than Normal Range

Code Types

FAULT CODE 2359 PID 411 FMI 0 (SPN 411 FMI 16)

J1587 / J1708J1939OEM

MID 128SA 0

PID 411SPN 411Fault Code 2359

FMI 0FMI 16***** *****ght

Code Description

EGR differential pressure sensor measures exhaust gas pressure drop across EGR differential pressure orifice. Calculate amount of EGR flow into intake manifold using this pressure drop.

If PID 411 FMI 0 (Fault Code 2359) is active after a key cycle and engine is not running, it will be set inactive only after meeting these conditions:

  • Engine coolant temperature is more than 154°F (67°C)
  • Intake manifold air temperature is more than 45°F (7°C)
  • Ignition switch transitions from ON to OFF a total of four times while depressing brake pedal.
  • EGR differential pressure sensor reading is within a set calibration threshold near zero.


EGR Differential Pressure Sensor – data valid but more than normal operating range – moderately severe level. EGR differential pressure sensor failed automatic calibration procedure or EGR differential pressure reading is not valid for engine operating conditions.

Possible Causes

  • Blocked turbocharger control shutoff valve filter
  • Blocked or leaking low or high EGR differential pressure tube
  • EGR valve stuck open or closed.
  • EGR connection tube hoses or tubes leakage
  • Failed EGR differential pressure sensor
  • Failed EGR connection tube hose
  • Failed variable geometry turbocharger
  • Failed variable geometry actuator
  • Failed turbocharger control valve
  • Failed turbocharger control shutoff valve
  • Leakage in air line supplying air pressure to turbocharger control shutoff valve, variable geometry actuator or turbocharger control valve
  • Incorrectly installed EGR differential pressure tubes and sensors.


Close EGR valve.

Click on this link for further troubleshooting