Is Cummins Isc Error Codes appearing? Adobe Acrobat Document 62.4 KB. Step 1 – Solve Cummins Isc Error Codes. However, the truck was still derated with the codes mentioned above and he wasn't sure how to fix it. Download Free Cummins Isc Engine Fault Codes challenging the brain to think greater than before and faster can be undergone by some ways. This fault code can be triggered if the application is not operating at a duty cycle high enough to actively regenerate the aftertreatment diesel particulate filter. Return from ISL and ISC Codes to Home Page. 1673 Catalyst Tank Level - Data Erratic, Intermittent, or Incorrect, 1674 Exhaust Gas Temperature 2 Circuit - Voltage Below Normal, or Shorted to Low Source, 1675 Exhaust Gas Temperature 2 Circuit - Voltage Above Normal, or Shorted to Low Source, 1676 Exhaust Gas Temperature 2 - Data Erratic, Intermittent, or Incorrect, 1677 Catalyst Tank Temperature - Voltage Below Normal, or Shorted to Low Source, 1678 Catalyst Tank Temperature - Voltage Above Normal, or Shorted to High Source, 1679 Catalyst Tank Temperature - Data Erratic, Intermittent, or Incorrect, 1681 Dosing Control Unit - Bad Intelligent Device or Component, 1682 Catalyst Reagent Dosing Unit Input Lines - Condition Exists, 1683 Catalyst Tank Heater Circuit - Voltage Above Normal, or Shorted to High Source, 1684 Catalyst Tank Heater Circuit - Voltage Above Normal, or Shorted to High Source, 1687 Catalyst Over Temperature - Data Valid but Above Normal Operational Range - Most Severe Level, 1689 Real-Time Clock Power Interrupt - Data Erratic, Intermittent or Incorrect, 1692 Aftertreatment Outlet NOx Sensor - Voltage Below Normal or Shorted to Low Source, 1694 Aftertreatment Outlet NOx Sensor - Data Erratic, Intermittent, or Incorrect, 1697 Aftertreatment #1 Air Enable Actuator - Voltage Above Normal, or Shorted to High Source, 1698 Aftertreatment #1 Air Enable Actuator - Voltage Below Normal, or Shorted to Low Source, 1699 Catalyst Tank Level Sensor - Data Erratic, Intermittent, or Incorrect ISL & ISC Codes 1700-1800 1711 Dosing Control Unit Datalink - Abnormal Update Rate, 1712 Catalyst Tank Heater Circuit - Data Valid But Below Normal Operating Range - Moderately Severe Level, 1713 Catalyst Tank Heater Circuit - Data Valid But Above Normal Operating Range - Moderately Severe Level, 1716 Auxiliary Temperature Sensor Input 1 Circuit - Root Cause Not Known, 1717 Exhaust Gas Temperature 1 - Data Valid but Above Normal Operational Range - Least Severe Level, 1718 Engine Misfire for Multiple Cylinders - Condition Exists ISL & ISC Codes 1800-2000 1848 Intake Manifold 1 Temperature - Abnormal Rate of Change, 1849 Exhaust Gas Temperature 1 - Abnormal Rate of Change, 1851 Exhaust Gas Temperature 2 - Abnormal Rate of Change, 1892 Wheel-Based Vehicle Speed - Data Valid but Below Normal Operational Range - Moderately Severe Level, 1911 Injector Metering Rail 1 Pressure - Data Valid but Above Normal Operational Range - Most Severe Level ISL & ISC Codes 2000-2200 2183 Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal, or Shorted to Low Source, 2185 Sensor Supply Voltage 4 Circuit - Voltage Above Normal or Shorted to High Source, 2186 Sensor Supply Voltage 4 Circuit - Voltage Below Normal or Shorted to Low Source ISL & ISC Codes 2200-2300 2215 Fuel Pump Delivery Pressure Low Choice, 2215b Fuel Pump Delivery Pressure Low - Data Valid but Below Normal Operational Range - Moderately Severe Level, 2215cl Fuel Pump Delivery Pressure Low - Data Valid but Below Normal Operational Range - Moderately Severe Level, 2216 Fuel Pump Delivery Pressure High Choice, 2216b Fuel Pump Delivery Pressure High - Data Valid but Above Normal Operational Range - Moderately Severe Level, 2216cl Fuel Pump Delivery Pressure High - Data Valid but Above Normal Operational Range - Moderately Severe Level, 2217 Engine Control Module Calibration Program Memory (RAM Corruption - Condition Exists, 2249 Injector Metering Rail 1 Pressure - Data Valid but Below Normal Operational Range - Most Severe Level, 2265 Electric Lift Pump for Engine Fuel Supply Circuit - Voltage Above Normal or Shorted to High Source, 2266 Electric Lift Pump for Engine Fuel Supply Circuit - Voltage Below Normal or Shorted to Low Source, 2271 EGR Valve Position Sensor Circuit - Voltage Above Normal or shorted to High Source, 2272 EGR Valve Position Sensor Circuit - Voltage Below normal or Shorted to Low Source, 2273 EGR Valve Differential Pressure Sensor Circuit - Shorted High, 2274 EGR Valve Differential Pressure Sensor Circuit - Shorted Low, 2292 Fuel Inlet Meter Device - Data Valid but Above Normal Operational Range - Moderately Severe Level, 2293 Fuel Inlet Meter Device Flow Demand Lower Than Expected - Data Valid but Below Normal Operational Range - Moderately Severe Level ISL & ISC Codes 2300-2500 2311 Fueling Actuator Number 1 Circuit Error Conditions Exists, 2321 Engine Crankshaft Speed/Position - Data Erratic, Intermittent, or Incorrect, 2322 Backup Engine Speed/Position Sensor Number 2 - Data Erratic, Intermittent, or Incorrect, 2345b Turbocharger Speed - Invalid Rate of Change Detected, 2345cl Turbocharger Speed Invalid Rate of Change detected - Abnormal Rate of Change, 2346b Exhaust Gas Temperature - Data Above Normal, 2346cl Turbocharger Turbine Inlet Temperature (Calculated - Data Valid but Above Normal Operational Range - Least Severe Level, 2347 Turbocharger Compressor Outlet Temperature Choice, 2347b Turbocharger Compressor Outlet Temperature - Data Above Normal, 2347cl Turbocharger Compressor Outlet Air Temperature (Calculated - Data Valid but Above Normal Range, 2348 EGR Valve Failed Automatic Calibration Procedure, 2349 EGR Valve Control Circuit - Current Below Normal or Open Circuit, 2351 EGR Valve Control Circuit - Voltage Below Normal or Shorted to Low Source, 2352 EGR Valve Control Circuit - Voltage Above Normal or Shorted to High Source, 2353 EGR Valve Control Circuit - Current Above Normal or Grounded Circuit, 2357 EGR Valve Control - Mechanical System Not Responding Properly or Out of Adjustment, 2359 EGR Differential Pressure Sensor - Data Valid But Above Normal Operating Range - Moderately Severe Level, 2362 Engine Brake Actuator Circuit Number 1 - Voltage Below Normal or Shorted to Low Source, 2363 Engine Brake Actuator Circuit Number 2 - Voltage Below Normal or Shorted to Low Source, 2366 Engine Brake Actuator Circuit Number 1 - Voltage Above Normal or Shorted to High Source, 2367 Engine Brake Actuator Circuit Number 2 - Voltage Above Normal or Shorted to High Source, 2373 Exhaust Gas Pressure Sensor Circuit - Shorted High, 2374 Exhaust Gas Pressure Sensor Circuit - Shorted Low, 2375 Exhaust Gas Recirculation (EGR Temperature Sensor Circuit - Voltage Above Normal or Shorted to High Source, 2376 Recirculation Exhaust Gas Temperature Sensor Circuit - Voltage Below Normal or Shorted to Low Source, 2377 Fan Control Circuit - Voltage Above Normal or Shorted to High Source, 2381 Turbocharger Position Sensor Circuit - Shorted High, 2382 Turbocharger Position Sensor Circuit - Shorted Low, 2383 Variable Geometry Turbocharger Actuator Circuit - Current Below Normal, or Open Circuit, 2384b VGT Actuator - Voltage Below Normal or Shorted to Low Source, 2384cl VGT Actuator Driver Circuit - Voltage Below Normal, or Shorted to Low Source, 2385b VGT Actuator - Voltage Above Normal or Shorted to High Source, 2385cl VGT Actuator Driver Circuit - Voltage Above Normal, or Shorted to High Source, 2386 Turbocharger Actuator Motor Circuit - Current Above Normal, 2387 Turbocharger Actuator Motor - Mechanical System Not Responding Properly, 2388 Variable Geometry Turbocharger Actuator Position Failed Automatic Calibration Procedure - Out of Calibration ISL & ISC Codes 2500-2800 2554 Exhaust Pressure Sensor Circuit - Data Erratic, Intermittent, or Incorrect, 2555 Intake Air Heater Number 1 Circuit - Voltage Above Normal or Shorted to High Source, 2556 Intake Air Heater Number 1 Circuit - Voltage Below Normal or Shorted to Low Source, 2557 Auxiliary PWM Driver Number 1 - Voltage Above Normal or Shorted to High Source, 2558 Auxiliary PWM Driver Number 1 - Voltage Below Normal or Shorted to Low Source, 2659 Engine Coolant Temperature - Condition Exists, 2771 Aftertreatment Outlet NOx Sensor - Abnormal Update Rate, 2772 Aftertreatment Outlet NOx - Data Valid but Above Normal Operational Range - Least Severe Level, 2773 Aftertreatment Outlet NOx - Data Valid but Above Normal Operational Range - Most Severe Level ISL & ISC Codes 2800-3000 2961 EGR Temperature - Data Valid But Above Normal Operating Range, Least Severe Level, 2962 EGR Temperature - Data Valid But Above Normal Operating Range, Moderately Severe Level, 2963 Engine Coolant Temperature High - Data Valid but Above Normal Operational Range - Least Severe Level, 2964 Intake Manifold Temperature High - Data Valid but Above Normal Operational Range - Least Severe Level, 2973 Intake Manifold Pressure Sensor Circuit - Data Erratic, Intermittent or Incorrect, 2976 Dosing Control Unit Temperature - Data Erratic, Intermittent, or Incorrect ISL & ISC Codes 9000-9122 9121 EGR Valve Actuator Over Temperature (Calculated - Data Above Normal Range, 9122 Variable Geometry Turbocharger Actuator Over Temperature. Cummins Tier 4 Fault Codes Fault Code J1939 SPN J1939 FMI Lamp J1939 SPN Description Cummins Description QSB 6.7 QSL 9 QSX 15 QSB 4.5 QSF 3.8 QSG12 111 629 12 Red Controller #1 Engine Control Module Critical Internal Failure - Bad intelligent device or component XXXXXX 115 612 2 Red System Diagnostic Code #2 Engine Magnetic Speed/Position Lost … Leave ISC fault codes and return to Home Page, Leave ISC fault codes and return to Home Page. This is the complete list of Cummins fault codes. Bad Intelligent Device or Component. Electronic Control Module Critical Internal Failure. Cummins ISX Fault Codes Fault Code 111 Electronic Control Module Critical Internal Failure. This fault code indicates that the exhaust temperatures exiting the turbocharger are not high enough to actively regenerate the soot that is trapped in the aftertreatment diesel particulate filter. 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