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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

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Detroit DD16 EPA07 (2007-09) Fault Code: SPN 164 FMI 5 (MCM) Fuel Rail Pressure Sensor Circuit Failed Open or A Stuck-in-Range Sensor

Volvo All Engines (2013 Emissions) Fault Code: P20C112 PID: ACM Reductant Heater “C” Control

Cummins ISB4.5 CM2150 Fault Code: 554 PID: SPN: 157 FMI: 2 Injector Metering Rail 1 Pressure – Data Erratic, Intermittent, or Incorrect.

PACCAR PX-8 CM2150 (2007-09) Fault Code: 133 PID: 372 SPN: 974 FMI: 3 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at remote accelerator position signal circuit.

Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3251 FMI 0 (ACM) Diesel Particulate Filter Pressure Out of Range Very High

Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 6876 PID: SPN: 4363 FMI: 2/20 Aftertreatment 1 SCR Outlet Temperature Sensor – Data Not Rational – Drifted High

Detroit DD15 EPA07 (2007-09) Fault Code: SPN 3246 FMI 4 (MCM) Diesel Particulate Filter Outlet Temperature Circuit Failed Low

PACCAR MX (2004 Emissions) Fault Code: P047C Exhaust Gas Pressure After BPV – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C81)

PACCAR PX-6 CM2150 (2007-09) Fault Code: 599 PID: SID 025 SPN: 640 FMI: 14 Auxiliary Commanded Dual Output Shutdown – Special Instructions. The engine protection limit has been exceeded for the dual outputs calibrated limits.

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Detroit DD15 EPA07 (2007-09) Fault Code: SPN 597 FMI 13 (CPC) J1939 Service Brake Switch Signal from Source #1, #2, Or #3 is Missing

Detroit DD13 EPA07 (2007-09) Fault Code: SPN 2631 FMI 3 (MCM, ACM) Intake Manifold Pressure Sensor Circuit Failed High

Cummins ISX15 CM2250 (2010-12) Fault Code: 3577 PID: SPN: 4376 FMI: 3 Aftertreatment Diesel Exhaust Fluid Return Valve- Voltage Above Normal or Shorted to High Source

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Volvo All Engines (2004 Emissions) Fault Code: PID 26 FMI 3 Fan Speed

Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3168 PID: SPN: 3936 FMI: 16 Aftertreatment Diesel Particulate Filter System- Data Valid But Above Normal Operating Range- Moderately Severe Level

Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 1664 PID: SID 380 SPN: 4796 FMI: 31 Aftertreatment Diesel Oxidation Catalyst Missing- Condition Exists

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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

MAN MANTIS v666 EPC [09.2021] Spare Parts Catalog

Isuzu E-IDSS 2023 Diagnostic Software

CAT ET 2024 Diagnostic Software for Heavy

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PACCAR PX-8 CM2150 (2007-09) Fault Code: 133 PID: 372 SPN: 974 FMI: 3 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at remote accelerator position signal circuit.

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Detroit DD15 EPA07 (2007-09) Fault Code: SPN 597 FMI 13 (CPC) J1939 Service Brake Switch Signal from Source #1, #2, Or #3 is Missing

Detroit DD13 EPA07 (2007-09) Fault Code: SPN 2631 FMI 3 (MCM, ACM) Intake Manifold Pressure Sensor Circuit Failed High

Cummins ISX15 CM2250 (2010-12) Fault Code: 3577 PID: SPN: 4376 FMI: 3 Aftertreatment Diesel Exhaust Fluid Return Valve- Voltage Above Normal or Shorted to High Source

Detroit DD13 EPA10 (2010-13) Fault Code: SPN 2791 FMI 8 (MCM) Exhaust Gas Recirculation Actuator, Failsafe Mode, Motor Off

Cummins ISX11.9 CM2250 (2010-12) Fault Code: 1938 PID: SID 212 SPN: 3597 FMI: 18 ECU Power Output Supply Voltage 1- Data Valid but Below Normal Operating Range- Moderately Severe Level

Volvo All Engines (2004 Emissions) Fault Code: PID 26 FMI 3 Fan Speed

Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3168 PID: SPN: 3936 FMI: 16 Aftertreatment Diesel Particulate Filter System- Data Valid But Above Normal Operating Range- Moderately Severe Level

Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 1664 PID: SID 380 SPN: 4796 FMI: 31 Aftertreatment Diesel Oxidation Catalyst Missing- Condition Exists

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