IK1201291 Service Bulletin/Repair Instructions

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Document ID: IK1201291

Revision:
6
ENGINE
Created:

Last

Modified:
4/23/2015
Author:
Marcelo

Sahagun
English
Other Languages: NONE

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1/16/2026
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Title : MAF Calibration Failure - DTC 132-14

Applies To : 2010 MY Emissions MF 7, 9, 10, DT, N9, and N10
CHANGE LOG

Please refer to the change log text box below for recent changes to this article:

01/16/2026 Changes to the "Applies to" section to add MF 9, 10, and DT

04/21/2020 - Author changed. Replaced SRTs with link to SRT Manual site

12/5/2018- Author updated after feedback review. No changes made

10/5/15 - Added OBFCT

04/23/2015 - 1st Draft


DESCRIPTION

This document will guide the user through Mass Air Flow (MAF) calibration procedures.
SYMPTOM(s)

•

•

•

•
MAF sensor Calibration Failed fault code after MAF Calibration procedure

Low power

Misfiring

Diagnostic Trouble Code(s) & Dashboard Indicator Light(s):
DTC/Light
Description
SPN 132 FMI 14
MAF sensor Calibration Failed
Customer Observations or Concerns:

Generally there is no Customer complaint as this fault is triggered when attempting to perform a MAF calibration
SPECIAL TOOL(s) / SOFTWARE

Tool Description

EST with ServiceMaxx
Tool Number
Comments
Instructions
EST to vehicle

interface
SERVICE PARTS INFORMATION

Kit Description
Part Number
Quantity

Notes

Required
N/A - no parts necessary for procedure
DIAGNOSTIC STEP(s)

Step Action

Does fault code 132-14 come active after MAF calibration attempt?
#1
Yes. Go to Step 2
No. Repair complete
Step Action

#2
Decision
Entry conditions must be met to perform MAF Cal:

- Must run KOER Standard Test first

- Engine Coolant Temperature 1 (above 176 F)

- Engine Oil Temperature (above 176 F)

- Engine Speed (Low Idle Speed)

- Accelerator Pedal Position (0%)

- Brake Switch (Released)

- Parking Brake Switch (Set)

** Only calibrate the MAF if one of the following conditions occurred:

- SPN 132 FMI 13 is set

- ECM calibration update

- Repair MAF sensor or circuit fault

- Repair IMP sensor or circuit fault

- Repair IMT sensor or circuit fault

- Replacement of DPF or DOC

- Repair of the Intake Air System
Decision

Yes. Go to Step 3
- Repair of the CAC system

- Repair or replacement of Turbocharger

- Repair or replacement of Engine Throttle Valve

- Repair or replacement of EGR valve

- Repair base engine (Cylinder head, Pistons, camshaft)

- Engine replacement or rebuild
No. Repeat Step 2
** MAF Calibration Pre-checks:

- No Active fault codes, other than the SPN 132 FMI 13

- MAF and IMP are within KOEO specification

- DPF Status = Regen Not Needed

- No leaks in the Intake Air System

- No leaks in Exhaust system

- No shop exhaust hose attached

- No engine performance issues

- No engine misfire issues

- Transmission in Park or Neutral

- Clutch disengaged

- Engine Fan is off

- PTO is disabled

- Air Conditioning is off

- Accelerator Pedal not depressed

- Close Engine Hood

Have all entry conditions been met?
Step Action

•

•

•

•
Run engine to operating temp.

Turn engine off.

Remove fan belt.

If equipped, remove PTO, Air compressor, Dual A/C compressor and wheel

chair lift belt.

• Run engine and perform Standard Test.

• Run the MAF calibration.

• Once complete you will be prompted to cycle the key.
Decision

Yes. Go to Step 4
NOTE: Make sure you cycle ignition off for at least 30 seconds.

This will prevent ghost over-boost faults from coming active.
#3
• Reinstall belt(s), clear codes.
No. Repair complete
Is fault code 132-14 active?
Step Action

#4
•

•

•

•

•
Run engine to operating temp.

Perform an OBFCT.

Turn engine off.

Remove fan belt.

If equipped, remove PTO, Air compressor, Dual A/C compressor and wheel

chair lift belt.

• Run engine and perform Standard Test.

• Run the MAF calibration.

• Once complete you will be prompted to cycle the key.
Decision

Yes. Review with Lead or Senior Tech.

Do not open a case file unless all

resources within the Dealership

have been exhausted.
NOTE: Make sure you cycle ignition off for at least 30 seconds.

This will prevent ghost over-boost faults from coming active.

• Reinstall belt(s), clear codes.

Is fault code 132-14 active?
REPAIR STEP(s)

N/A
WARRANTY INFORMATION

Warranty Claim Coding:

Group: 12000 - Engines

Noun: 993 - Sensor, Mass Air Flow (Chassis Mounted)

Standard Repair Time(s):

Refer to the SRT Manual for Repair Times
OTHER RESOURCES

MaxxForce 7 Diagnostic Manual

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Copyright © 2026 Navistar, Inc.
No. Repair complete

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