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Volvo All Engines (2010 Emissions) Fault Code: SPN 626 FMI 4 PID: 45 Intake Air Heater (IAH) Relay

Category All Engines (2010 Emissions) Tags 2010, 4, 626, Air, All, CodeSPN, Emissions, Engines, Fault, FMI, Heater, IAH, Intake, PID45, Relay, Volvo

The preheat Relay controls the preheater from an electric signal from the Engine Control Module (ECM). This function is used to warm up the inlet air during cold conditions. This provides more reliable starting and reduces exhaust emissions during cold starts. Vehicles can be equipped with or without the preheater.

Conditions for diagnostic trouble code (DTC):
1) Output activated
2) Short circuit to battery voltage on A14.EB:25

Observable symptoms
1) Intake air heater (IAH) relay never activated
2) Difficult to start in extreme cold
3) White smoke at cold start

Probable cause
1) Engine wiring harness
2) Connector
3) Intake air heater (IAH) relay

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Volvo All Engines (2010 Emissions) Fault Code: SPN 626 FMI 4 PID: 45 Intake Air Heater (IAH) Relay

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Allison 3000 & 4000 Gen 4 Fault Code: P0989 Retarder Pressure Sensor Failed Low

CAT 3126B Fault Code: 190-11 PID: Flash Code 34 SPN: FMI: No Pattern on Engine Speed/Timing Sensor #1

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Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3226 FMI 13 (ACM) Selective Catalyst Reduction Outlet NOx Sensor Signal Not Available

PACCAR PX-6 CM2150 (2007-09) Fault Code: 132 PID: 91 SPN: 91 FMI: 4 Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at accelerator pedal position number 1 signal circuit.

Detroit DD15 GHG14 (2014-16) Fault Code: SPN 171 FMI 2 (CPC) Ambient Temperature Sensor Data Erratic

Cummins ISC CM2150 (2007-09) Fault Code: 2637 PID: SPN: 3050 FMI: 11 Catalyst Face Plugged – Root Cause Not Known. The front face of the aftertreatment diesel oxidation catalyst has been detected to be plugged with soot.

Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 6575 PID: SPN: 7317 FMI: 9 Predictive Cruise Control State- Abnormal Update Rate

PACCAR MX (2004 Emissions) Fault Code: P0121 Accelerator Pedal – Sticking Pedal

Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 6263 PID: SPN: 647 FMI: 3 Fan Control Circuit- Voltage Above Normal or Shorted to High Source

Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3859 FMI 4 (CPC) Digital Input 4 16 – Short to Ground on Pin 16 Circuit of the Common Powertrain Controller #4 Connector

Cummins ISX15 CM2250 (2010-12) Fault Code: 3734 PID: 102 SPN: 862 FMI: 4 Crankcase Breather Filter Heater Circuit- Voltage Below Normal or Shorted to Low Source

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Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 3328 PID: SPN: 191 FMI: 9 Transmission Output Shaft Speed- Abnormal Update Rate

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Volvo All Engines (2010 Emissions) Fault Code: SPN 626 FMI 4 PID: 45 Intake Air Heater (IAH) Relay

CLAAS MetaDiag 2007 Update 2016

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