Volvo All Engines (2010 Emissions) Fault Code: SPN 975 FMI 3 PID: Estimated Percent Fan Speed

Category All Engines (2010 Emissions) Tags 2010, 3, 975, All, CodeSPN, Emissions, Engines, Estimated, Fan, Fault, FMI, Percent, PID, Speed, Volvo

The auxiliary fan provides extra engine cooling based on requests from the engine control module (ECM)

Conditions for diagnostic trouble code (DTC):
1) Engine running
2) The voltage at pin A14.EA:35 is more than 7.8?V

Observable symptoms
1) Fan noise
2) The fan will either be fully engaged or fully disengaged. Engaging and disengaging will however take some time.
3) High fuel consumption

Probable cause
1) Fan speed sensor
2) Wiring harness
3) Connector
4) Engine control module (ECM)

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Volvo All Engines (2010 Emissions) Fault Code: SPN 975 FMI 3 PID: Estimated Percent Fan Speed

CAT ET 2026 Diagnostic Software

DETROIT DIESEL DIAGNOSTIC LINK 8.23 SP2 2026

DETROIT DIESEL DIAGNOSTIC LINK DDDL 8.20 SP1 2025

John Deere Service Advisor 5.4.44 2025 (AG & CF) | Nexiq USB Link 3 Compatible

NEXIQ eTechnician 2.1.7657.26963 + Patch 2020

CAT ET 2026 Diagnostic Software

Hino DX3 1.22.10 2022 ( 1 PC )

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Volvo All Engines (2017 Emissions) Fault Code: P020456 PID: EMS Cylinder 4 Injector “A”

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Volvo All Engines (2010 Emissions) Fault Code: SPN 975 FMI 3 PID: Estimated Percent Fan Speed

CAT ET 2026 Diagnostic Software

DETROIT DIESEL DIAGNOSTIC LINK 8.23 SP2 2026

DETROIT DIESEL DIAGNOSTIC LINK DDDL 8.20 SP1 2025

John Deere Service Advisor 5.4.44 2025 (AG & CF) | Nexiq USB Link 3 Compatible

NEXIQ eTechnician 2.1.7657.26963 + Patch 2020

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Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3854 FMI 3 (CPC) Digital Input 2 13 – Failed High on Pin 13 Circuit of the Common Powertrain Controller #2 Connector

Cummins ISB6.7 CM2350 (2013-17) Fault Code: 427 PID: SID 231 SPN: 639 FMI: 9 SAE J1939 Data Link- Abnormal Update Rate

Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 5899 PID: SPN: 1327 FMI: 11/11 Engine Misfire Cylinder #5 – Root Cause Not Known

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Volvo All Engines (2010 Emissions) Fault Code: SPN 631 FMI 4 PID: PSID 7 Calibration memory

Detroit DD13 GHG14 (2014-16) Fault Code: SPN 708 FMI 4 (CPC) Digital Output 3 12 Circuit Failed Low

Detroit DD15 GHG14 (2014-16) Fault Code: SPN 2791 FMI 2 (MCM) Smart Remote Actuator 3 (EGR) Position Deviation Error

Volvo All Engines (2017 Emissions) Fault Code: P020456 PID: EMS Cylinder 4 Injector “A”

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