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23 August, 2025

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Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 5989 PID: SPN: 102 FMI: 2/20 Intake Manifold 1 Pressure – Data Not Rational – Drifted High

Lamp:Amber Reason:The intake manifold pressure is not rational. Effect:Possible reduced engine performance. Circuit Description:The Engine Control Module (ECM) provides a...

23 August, 2025

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Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 5991 PID: SPN: 102 FMI: 2/21 Intake Manifold 1 Pressure – Data Not Rational – Drifted Low

Lamp:Amber Reason:The intake manifold pressure is not rational. Effect:Possible reduced engine performance. Circuit Description:The Engine Control Module (ECM) provides a...

23 August, 2025

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Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 6246 PID: SPN: 5709 FMI: 11/11 Aftertreatment 1 Outlet NOx Sensor Self-Diagnosis Trigger – Root Cause Not Known

Lamp:Amber Reason:The aftertreatment outlet NOx sensor reading is not valid. Effect:None on performance. Circuit Description:The aftertreatment outlet NOx (Nitrogen Oxides)...

23 August, 2025

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Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 6458 PID: SPN: 3216 FMI: 2/20 Aftertreatment 1 Intake NOx Sensor – Data Not Rational – Drifted High

Lamp:None Reason:An offset in the intake NOx sensor reading has been detected. Effect:Possible reduced engine performance. Circuit Description:The aftertreatment intake...

23 August, 2025

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Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 6459 PID: SPN: 3216 FMI: 2/21 Aftertreatment 1 Intake NOx Sensor – Data Not Rational – Drifted Low

Lamp:None Reason:An offset in the intake NOx sensor reading has been detected. Effect:Possible reduced engine performance. Circuit Description:The aftertreatment intake...

23 August, 2025

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Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 6461 PID: SPN: 3216 FMI: 2/2 Aftertreatment 1 Intake NOx – Data Erratic, Intermittent, or Incorrect

Lamp:None Reason:An incorrect NOx sensor reading has been detected by the aftertreatment intake NOx sensor. Effect:None on performance. Circuit Description:The...

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