Apr 11, 2026 | Uncategorized
Make: DetroitEngine: DD15 GHG17 (2017 & Newer)PID: N/ASPN: 520355FMI: 21Description: NOx Outlet Sensor Diagnosis Oxygen Pump Capacity Low Troubleshooting:DESCRIPTION:NOx sensor internal reading less than 50.MONITORED PARAMETER:Outlet NOx sensor O2 reading.TYPICAL...
Apr 11, 2026 | Uncategorized
Make: DetroitEngine: DD15 GHG17 (2017 & Newer)PID: N/ASPN: 520362FMI: 3Description: Soot Sensor Supply Line Voltage Above Normal, Or Shorted To High Source Troubleshooting:DESCRIPTION:This fault sets when supply voltage is above normal with the ignition ON or...
Apr 11, 2026 | Uncategorized
Make: Detroit Engine: DD15 GHG17 (2017 & Newer) PID: N/A SPN: 520378 FMI: 0 Description: Aftertreatment Temperature Not Plausible Troubleshooting:DESCRIPTION:This fault sets when more than one aftertreatment temperature sensor drifts greater than 70°C(126°F...
Jun 19, 2025 | Uncategorized
FAULT CODE 6799 Aftertreatment 1 Diesel Exhaust Fluid Pressure Sensor – Data Not Rational – Drifted High Overview CODE REASON EFFECT Fault Code: 6799PID: SPN: 4334FMI: 2/20LAMP: NoneSRT: An offset in the Diesel Exhaust Fluid Pressure Sensor...
Jun 18, 2025 | Uncategorized
FAULT CODE 5578 Aftertreatment 1 Particulate Sensor Power Supply – Voltage Below Normal or Shorted to Low Source Overview CODE REASON EFFECT Fault Code: 5578PID: SPN: 6778FMI: 4/4LAMP: AmberSRT: An internal circuit error has been detected by the...
Jun 18, 2025 | Uncategorized
FAULT CODE 4261 Aftertreatment Selective Catalytic Reduction Temperature Sensor Module – Root Cause Not Known Overview CODE REASON EFFECT Fault Code: 4261PID:SPN: 5743FMI: 11/11LAMP: AmberSRT: Intermittent battery voltage supply detected at the...
