NHTSA ID Number: 10225697
Manufacturer Communication Number: KC-2214
TSB/Document Date: 2022-11-03
Summary
Turbo Compound 2nd Generation - EGR And/Or DPF Diagnostic Trouble Codes (DTC), Diagnostic And Repair Information
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TSB/Document ID: KC-2214
Replacement Service Bulletin Number:
MFR Communication Date: 2022-10-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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10/31/22, 1:03 PM
Article
Turbo Compound 2nd Generation - EGR And/Or
DPF Diagnostic Trouble Codes (DTC), Diagnostic
And Repair Information
Internal Content
Results – Back Office Info ONLY
Egr dp > 0.5 psi – Suspect failed EGR valve
(Combination of two conditions) Exhaust back pressure > 50 psi , Turbo
speed > 80,000 , and gauge boost pressure > 15 psi– Suspect failed
turbo
Repair
Depending on engine test results send the following
instructions via the eService case:
1. Remove the turbo and EGR valve to inspect the EGR valve for
damage.
• If damage is found to the EGR valve plates:
1.1. Attempt to find any missing pieces in the EGR cooler
inlet, hot pipe or exhaust manifold.
1.2. Replace the EGR Valve.
2. Evaluate the turbo.
• If exhaust back pressure was greater than 50 psi during the
engine test:
2.1. Replace the turbo.
• If exhaust backpressure was less than 50 psi during the
engine test:
2.2. Visually inspect the turbo turbine (outlet) and vane ring.
; Live UI
- A borescope is needed for the vane ring inspection
and turbine wheel.
1/5
10/31/22, 1:03 PM
Article
2.3. If damage is found: Replace the turbo.
3. Evaluate the EGR cooler.
• If P0401 is logged close to the failure date:
3.1. Replace the EGR cooler.
• If P0401 is not logged close to the failure date:
3.2. Visually inspect the EGR cooler inlet for debris and
ensure the tubes and fins are not damaged.
3.3. If damage is found: Replace the cooler as necessary.
4. Provide photos of debris, damage, or cooler plugging found during
inspections in the eService case.
5. Inspect and clean exhaust back pressure piping;
6. Perform a sulfur regen to clean soot accumulation from EATS
system.
• If smoke is observed or code P2002 is set:
6.1. Inspect the EATS for damage.
Repair Verification
1. Repeat the test from the Diagnosis section and attach the new results
to the eService case.
Target results - BACK OFFICE ONLY
• EGR dp < 0.3 psi
• Exhaust back pressure < 40 psi
• Turbo speed < 80,000 rpm
• Gauge boost pressure < 15 psi
2. Road test to confirm no fault codes, performance issues, or other
drivability concerns.
; Live UI
2/5
10/31/22, 1:03 PM
Article
Vehicles equipped with a second generation turbo compound engine may
experience a combination of diagnostic trouble codes related to the EGR
system and/or issues with regeneration.
This solution should be reviewed and followed prior to performing
other diagnostics.
Product Identification
Vehicles equipped with a 2nd Generation Turbo-compound unit will have a
turbocharger equipped with a wastegate as seen below.
Symptoms and Diagnostic Trouble Codes
Important: Affected vehicles will display a combination of two or more of
the DTCs and/or symptoms listed below. Singular codes or symptoms
should be investigated via normal diagnostic procedures.
Exhaust
EGRUIDTC DPF DTC
; Live
Backpressure
Symptom
Inability to perform a
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Article
P040100 P10FE00 P047164
Inability to perform a
regeneration
P040200 P10E100
P240F00 P245364
P023400 P246300
P029900 P24A400
Diagnosis
1. Electrically disconnect EGR valve and AVU.
2. Using Tech Tool, run operation 2589-08-03-02 Exhaust Aftertreatment
System, Service Regeneration for data monitoring and collection.
3. Start engine and increase engine speed to 2000 RPM for 3-5 minutes.
4. Finish work in PTT.
5. Start an eService case if there is not an existing one for this shop visit.
6. In the summary provide:
• A detailed summary of symptoms and DTCs
• Any relevant history
• This solution number
7. Retrieve and attach the .csv data file to the eService case.
Repair
• Instructions for how to proceed will be provided by Dealer Technical
Support via the eService case.
• The eService case should be updated with findings based on the
instructions provided.
Tags
UI
; Livemack
p246300
p24a400
p047164
4/5
10/31/22, 1:03 PM
Article
p040100
p040200
p240f00
p023400
p029900
p10fe00
p10e100
p245364
turbo compound
regen failure
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