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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

CAT CDVR PC Software – Caterpillar Digital Voltage Regulator (CDVR) WINDOWS 10

VOLVO PROSIS 2023 ( 11.2022 )

PF Diagnose 2.0.2.23 Diagnostics Software 2013 – Full Heavy & Medium Duty with OBDII Support – Online Installation Service

Volvo All Engines (2013 Emissions) Fault Code: P066800 PID: EMS PCM/ECM/TCM Internal Temperature Sensor Circuit Low

Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 3148 PID: SPN: 4363 FMI: 2 Aftertreatment 1 SCR Outlet Temperature Sensor- Data Erratic, Intermittent, or Incorrect

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 3599 FMI 3 (MCM) Motor Control Module Internal Injector Power Supply Failed High

Volvo All Engines (2004 Emissions) Fault Code: SID 146 FMI 3 EGR Control Valve

Eaton Gen 1 (AutoShift) Fault Code: 31 PID: PID 62 FMI: 4 Engine Brake Relay Coil

Detroit DD13 GHG14 (2014-16) Fault Code: SPN 2791 FMI 11 (MCM) Smart Remote Actuator 3 (EGR), Common Error

Volvo All Engines (2017 Emissions) Fault Code: U300A12 PID: ACM Key Position

Cummins ISX15 CM2250 (2010-12) Fault Code: 3255 PID: SPN: 3246 FMI: 16 Aftertreatment Diesel Particulate Filter Outlet Temperature- Data Valid But Above Normal Operating Range- Moderately Severe level

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 625 FMI 18 (MCM) No Aftertreatment Control Module (ACM) Communication – Warning

Cummins ISC CM2150 (2007-09) Fault Code: 131 PID: 91 SPN: 91 FMI: 3 Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at accelerator pedal position number 1 circuit.

Eaton Fuller Advantage (2017) Fault Code: 25 PID: SPN: 629 FMI: 1 No Faults Found: Data Valid But Below Normal

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4360 FMI 3 (ACM) Selective Catalyst Reduction Inlet Temperature Sensor Circuit Failed High

Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3663 FMI 4 (MCM) Injector Cylinder #5 Amplifier Control Valve Abnormal Operation (Min)

Volvo All Engines (2013 Emissions) Fault Code: P21CA00 PID: EMS Reductant Control Module Supply Voltage

Cummins ISL CM850 (2003-06) Fault Code: 334 PID: 110 SPN: 110 FMI: 2 Engine Coolant Temperature – Data Erratic, Intermittent, or Incorrect. The engine coolant temperature reading is not changed with engine operating conditions.

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1639 FMI 2 (MCM) Fan Speed Error

Cummins ISB6.7 CM2350 (2013-17) Fault Code: 4259 PID: SPN: 5742 FMI: 11 Aftertreatment Diesel Particulate Filter Temperature Sensor Module – Root Cause Not Known. Intermittent battery voltage supply detected at the aftertreatment diesel particulate filter temperature sensor module.

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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

CAT CDVR PC Software – Caterpillar Digital Voltage Regulator (CDVR) WINDOWS 10

VOLVO PROSIS 2023 ( 11.2022 )

PF Diagnose 2.0.2.23 Diagnostics Software 2013 – Full Heavy & Medium Duty with OBDII Support – Online Installation Service

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Volvo All Engines (2017 Emissions) Fault Code: U300A12 PID: ACM Key Position

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Eaton Fuller Advantage (2017) Fault Code: 25 PID: SPN: 629 FMI: 1 No Faults Found: Data Valid But Below Normal

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4360 FMI 3 (ACM) Selective Catalyst Reduction Inlet Temperature Sensor Circuit Failed High

Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3663 FMI 4 (MCM) Injector Cylinder #5 Amplifier Control Valve Abnormal Operation (Min)

Volvo All Engines (2013 Emissions) Fault Code: P21CA00 PID: EMS Reductant Control Module Supply Voltage

Cummins ISL CM850 (2003-06) Fault Code: 334 PID: 110 SPN: 110 FMI: 2 Engine Coolant Temperature – Data Erratic, Intermittent, or Incorrect. The engine coolant temperature reading is not changed with engine operating conditions.

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1639 FMI 2 (MCM) Fan Speed Error

Cummins ISB6.7 CM2350 (2013-17) Fault Code: 4259 PID: SPN: 5742 FMI: 11 Aftertreatment Diesel Particulate Filter Temperature Sensor Module – Root Cause Not Known. Intermittent battery voltage supply detected at the aftertreatment diesel particulate filter temperature sensor module.

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