About a months ago our cascading. 2013 Dd15 started having…

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FMI 0

341.1  SPN 3251/FMI 0 - EPA07

Diesel Particulate Filter Pressure Out of Range Very High

This fault code sets when the Diesel Particulate Filter (DPF) outlet pressure is greater than 35 kPa (5 psi) for more than 10 seconds.

SPN 3251/FMI 0

DescriptionDPF Pressure Out of Range Very High

Monitored ParameterExhaust Pressure

Typical Enabling ConditionsAlways On

Monitor SequenceNone

Execution FrequencyContinuous When Enabling Conditions Met

Typical Duration2 Seconds

Dash LampsMIL, CEL, SEL

Engine ReactionDerate 25%

VerificationRun Engine Between 1200 to 1800 rpm With a Load Less Than 10%

Check as follows:

Show/Hide Checkboxes

1. Connect DiagnosticLink® . Go to step 2.
2. Turn the ignition ON (key ON, engine OFF). Go to step 3.
3. Using DiagnosticLink go to Service Routines > Voltages. Go to step 4.
4. Click the "start acquiring" tab and monitor the DPF outlet pressure (pin 30) parameter. Is the DPF outlet pressure sensor voltage between 0.44 to 0.56 volts?
   1. Yes; disconnect the exhaust behind the DPF and repair the restriction. Verify repair.
   2. No; replace the DPF outlet pressure sensor. Refer to section "Removal of the EPA07 Pressure Sensors" . Verify repair.

Printed Wed Jul 10 2019 17:59:53 GMT-0400 (Eastern Daylight Time)

Copyright © 2019 by Detroit Diesel Corporation. All rights reserved.

Last updated on 07-25-2014

FMI 2

342.3  SPN 3251/FMI 2 - EPA10

Diesel Oxidation Catalyst (DOC) Inlet Pressure - Not Plausible

SPN 3251/FMI 2

DescriptionThis Fault Code Sets when the Pressure Drop between the Diesel Oxidation Catalyst (DOC) Inlet Pressure or Diesel Particulate Filter (DPF) Outlet Pressure Is Not Within an Expected Value

Monitored ParameterDOC Inlet Pressure Sensor and DPF Outlet Pressure Sensor

Typical Enabling ConditionsAlways On

Monitor SequenceNone

Execution FrequencyContinuous When Enabling Conditions Met

Typical Duration2 Seconds

Dash LampsMIL, CEL

Engine ReactionDerate 25%, EGR Shut Off, Regen Inhibited

VerificationRun Engine Between 1200 to 1800 rpm With a Load Less Than 10%

Check as follows:

Show/Hide Checkboxes

ENGINE EXHAUST

To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.

PERSONAL INJURY

To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.

HOT EXHAUST

During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if directed at combustible materials. The vehicle must be parked outside.

1. Is the Motor Control Module (MCM) software level v7.5.0.108 with fuel map ZGS 003 (DD15/16) & ZGS 004 (DD13) or higher?
   1. Yes; Go to step 2.
   2. No; update device software and then Go to step 2.
2. Visually inspect the entire exhaust system for signs of leaks or damage. Was any damage found?
   1. Yes; repair as necessary. Verify repairs.
   2. No; Go to step 3.
3. Review DDEC Reports. Does the data indicate high idle time or extended PTO time?
   1. Yes; the vehicle may be a candidate for Auto-Elevate feature and/or PTO Dosing. Refer to 10 TS-21 and 11 TS-15 . Go to step 4.
   2. No; Go to step 4.
4. Connect DiagnosticLink® .
5. Using the Selective Catalyst Reduction (SCR) voltage service routine, monitor the Diesel Oxidation Catalyst (DOC) inlet pressure sensor (pin 87) and Diesel Particulate Filter (DPF) outlet pressure sensor (pin 72) voltages with key ON and engine OFF.
6. Are the DOC inlet pressure sensor and DPF outlet pressure sensor voltages between .44 and .56 volts?
   1. Yes; Go to step 7.
   2. No; if the voltage is greater than .56 volts, replace the suspect sensor. If the voltage is less than .44 volts, inspect electrical connections between suspect sensor connector and Aftertreatment Control Module (ACM) for bent, spread, or corroded pins. Repair as necessary.
7. Inspect the DPF pressure sensor tube and elbow for leaks, kinks, or blockages. Were any leaks, kinks or blockages found?
   1. Yes; repair as necessary.
   2. No; Go to step 8.
8. Inspect the DOC pressure sensor tube and elbow for leaks, kinks, or blockage. Were any leaks, kinks or blockages found?
   1. Yes; repair as necessary.
   2. No; Go to step 9.
9. Start the engine and run a Parked Regen. Monitor DOC inlet pressure and engine speed during the regen. Compare your DOC inlet pressure reading to the screen shots below to identify a possible cause of the fault code.
10. Did either the DOC inlet pressure or the DPF pressure sensor drop to zero at any point during the regen?
    1. Yes; the sensor that dropped to zero is drifted; replace the drifted sensor and verify repairs.
    2. No; Go to step 11.
11. Did the DOC inlet pressure start above 8 kPa (1.16 psi) and stay high?
    1. Yes; the DOC is considered plugged. Go to step 13.
    2. No; Go to step 12.

       If the DOC inlet pressure starts out high above 10 kPa (1.45 psi) and decreases during the parked regen., this indicates the DPFs were plugged and the parked regen cleared them.

       If the DOC inlet pressure starts above 6 kPa (GHG14, 0.8 psi), and stays high, the DOC is considered plugged.

12. The parked regen has reduced the DOC inlet pressure by reducing the soot accumulated in the DPF. Verify the fault code is gone and fill out the "ATD Checklist". Refer to section "ATD Checklist - EPA10" .
13. Complete the "ATD Checklist". Refer to section "ATD Checklist - EPA10" and then, using DiagnosticLink, perform the DOC face cleaning routine. Refer to section "EPA10 and GHG14 Diesel Oxidation Catalyst Face Cleaning" .

Printed Wed Jul 10 2019 18:01:37 GMT-0400 (Eastern Daylight Time)

Copyright © 2019 by Detroit Diesel Corporation. All rights reserved.

Last updated on 12-19-2017

FMI 16

341.3  SPN 3251/FMI 16 - EPA07

Diesel Particulate Filter Pressure Out of Range High

This fault code sets when the Diesel Particulate Filter (DPF) outlet pressure is greater than 30 kPa (4.2 psi) for more than 10 seconds.

SPN 3251/FMI 16

DescriptionDPF Pressure Out of Range High

Monitored ParameterDPF Outlet Pressure Sensor

Typical Enabling ConditionsAlways On

Monitor SequenceNone

Execution FrequencyContinuous When Enabling Conditions Met

Typical Duration2 Seconds

Dash LampsMIL, CEL, SEL

Engine ReactionDerate 25%

VerificationRun Engine Between 1200 to 1800 rpm With a Load Less Than 10%

Check as follows:

Show/Hide Checkboxes

1. Connect DiagnosticLink® .
2. Turn the ignition ON (key ON, engine OFF).
3. Using DiagnosticLink go to Service Routines > Voltages.
4. Click the "start acquiring" tab and monitor the DPF outlet pressure (pin 30) parameter. Is the DPF outlet pressure sensor voltage between 0.44 to 0.56 volts?
   1. Yes; disconnect the exhaust behind the DPF and repair the restriction. Verify repair.
   2. No; replace the DPF outlet pressure sensor. Refer to section "Removal of the EPA07 Pressure Sensors" . Verify repair.

Printed Wed Jul 10 2019 18:03:01 GMT-0400 (Eastern Daylight Time)

Copyright © 2019 by Detroit Diesel Corporation. All rights reserved.

Last updated on 07-25-2014

These are not hard codes to diagnose at all.

My first thought is a wiring harness as the ACM harness is a very common failure.

Roy

No problem.

Keep me updated.

Roy

Any time

Roy