NHTSA ID Number: 11027306
Manufacturer Communication Number: IK1201252
TSB/Document Date: 2026-01-07
Summary
This document describes the process for utilizing the CPA High Pressure Fuel Pump (HPFP) Test
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Document
IK1201252
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Major
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Current
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Other
Languages:
ISIS, FleetISIS, NotSIR
Revision: 13
ENGINE
Created:
1/7/2015
English
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12/18/2025
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Mujtaba
Aidroos
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Title : CPA HPFP Test
Applies To : EPA 2010-2012 MaxxForce 11/ 13L --- EPA 2013-2016 N13
CHANGE LOG
5/20/2019 - Added note for programming support based on feedback when changing engine speed.
10/06/2017- Updated Test set up image/ NED Entry conditions/ 3055 code call outs
06/07/2017- Updated to structured layout
04/12/2017 - Updated diagnostic software to Navistar Engine Diagnostics™.
12/14/2016 - Updated instructions at Step 6 to remove temperature and to follow Navistar
Engine Diagnostics™ entry conditions
2/24/2016- corrected CAM polarity error in instructions
7/06/2015 - Author updated for feedback purposes.
DESCRIPTION:
This document describes the process for utilizing the CPA High Pressure Fuel Pump (HPFP) Test
CPA HPFP Test Apply to:
Emission Year
Engine Model
2010-2012
MaxxForce 11/ 13L
2013-2016
N13
Software Release:
Version
Change Description
Release Date
6.0.10.1 High Pressure Fuel Pump (HPFP) Test
3/18/2015
Note: Software must always be current. Refer to the CPA Resource Article
SYMPTOM(s)/ FAULT CODE(s):
Follow the appropriate diagnostic manual for step-by-step diagnostic instruction
Fault Code
iKnow Article
Notes
3055-0
IK1201061
Applies to MF15
3055-15
IK1201063
Applies to MF15
Note: For MF11/13L follow the FCAP
SPECIAL TOOL(s) / SOFTWARE:
Tools required for component removal: Refer to the appropriate engine service manual
To perform CPA HPFP Test properly, the following tools are required:
Tool Description
EZ-Tech or Computer
Tool Number
Comments
Navistar Engine Diagnostics and CPA software
must be installed
RP1210
communication
device
NavCom or Nexiq
CPA Module
OE-11178 or
12-999-01-01
E1 Breakout
Harness
12-801-04
CPA Extension
Harness
12-999-01-05
Replaces 180-Pin Breakout Box (00-00956-08)
and E1/E2 Harness Overlay Kit (00-01462-00)
4 required
Tools Resource Center
Test Descriptions:
Overview of set up:
Preliminary Test & CPA Software Requirements
1. Ensure ServiceMaxx/ Navistar Engine Diagnostics can perform the KOER: High Pressure Pump Test
Connect the CPA tool only if the vehicle is parked and the parking brake is set. Never drive the vehicle with the CPA tool (or cables) connected to the engine because it may sta
Signal Descriptions:
Coming Soon
TROUBLESHOOTING: HPFP Test will NOT run in Navistar Engine Diagnostics™
1. TEST ENTRY CONDITIONS
Review Entry Conditions in tab 11L, 13L & 15L (2010-):
Note: AFT Regen Status (Not Active) applies to 11/13L
Under Entry Condition signals, review the outputs and compare to entry condition requirements:
Under Parameters, change as needed based on entry condition requirements: If parameters are greyed out, in order to proceed with HPFP test,
contact programming support for a template to change the parameters as needed.
WARRANTY INFORMATION
CPA Test Module
13L High Pressure Fuel Pump (HPFP) Module
WAC can be issued for components listed
High Pressure Fuel Pump (HPFP)
Navistar Engine Model
2010-2016 MF11/13L/ N13
Example WAC
Related Articles
XXXX
All Component Replacement Requirements are temporarily covered under policy letter: WPL2800126
Reference the Warranty Resource Center for the most recent iApproval/ Warranty Authorization Code (WAC) requirements letter
Refer to the Warranty Coding Manual for Group and Noun Codes
Warranty Claim Coding:
Refer to the Warranty Coding Manual for Group and Noun Codes.
Group: 12000 - Engine
Noun: 454 - High Pressure Fuel Pump
Standard Repair Times:
Description
SRT Link
12 - CYLINDER PERFORMANCE ANALYZER (CPA) TOOL, DIAGNOSIS
CPA Diagnostics
SRT Manual
OTHER RESOURCES
Master Service Information Site
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Copyright © 2026 Navistar, Inc.
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TSB/Document ID: IK1201252
Replacement Service Bulletin Number:
MFR Communication Date: 2025-12-18
MFR Internal Campaign ID/Software Version: IK1201252
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: FUEL/PROPULSION SYSTEM
MFR Component System:
MFR Component Subsystem:
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