CUMMINS ISL & ISC Fault Codes DTC
CUMMINS ISL & ISC Engine Codes 0-100
0001 Exhaust Gas Pressure Sensor Number 1 Circuit – Voltage Above Normal, or Shorted to High Source
0002 Exhaust Gas Pressure Sensor Number 1 Circuit – Voltage Below Normal, or Shorted to Low Source
0003 Exhaust Gas Pressure Sensor Number 1 Circuit – Data Erratic, Intermittent, or Incorrect
0004 Exhaust Gas Temperature Sensor Number 1 Circuit – Data Erratic, Intermittent, or Incorrect
0005 Exhaust Gas Temperature Sensor Number 1 Circuit – Voltage Below Normal, or Shorted to Low Source
0006 Exhaust Gas Temperature Sensor Number 1 Circuit – Voltage Above Normal, or Shorted to High Source
ISL & ISC Codes 100-200
111 Engine Control Module Critical Internal Failure – Bad Intelligent Device or Component
115 Engine Magnetic Crankshaft Speed/Position Lost Both of Two Signals – Data Erratic, Intermittent, or Incorrect
122 Intake Manifold Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
123 Intake Manifold Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
124 Intake Manifold One Pressure – Data Valid but Above Normal Operational Range – Moderately Severe Level
131 Accelerator Pedal or Lever Position Sensor Circuit – Shorted High
132 Accelerator Pedal or Lever Position Sensor Circuit – Voltage Below Normal or Shorted to Low Source
133 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Above Normal, or Shorted to High Source
134 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Below Normal, or Shorted to Low Source
135 Oil Pressure Sensor Choice
135auto Oil Pressure Sensor Circuit — Voltage Above Normal or Shorted to High Source
135mar Oil Pressure Sensor Circuit — Voltage Above Normal or Shorted to High Source
141 Oil Pressure Sensor Circuit Choice
141auto Oil Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
141mar Oil Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
143 Oil Pressure Low Choice
143b Oil Pressure Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
143bm Oil Pressure Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
144 Coolant Temperature Sensor Circuit Choice
144b Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source
144bm Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source
145 Engine Coolant Temperature 1 Sensor Circuit Choice
145b Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source
145bm Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source
146 Engine Coolant Temperature Choice
146b Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level
146bm Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level
147 Accelerator Pedal or Lever Position 1 Sensor Circuit Frequency – Data Valid but Below Normal Operational Range – Most Severe Level
148 Accelerator Pedal or Lever Position Sensor One – Data Valid but Above Normal Operational Range – Most Severe level
151 Engine Coolant Temperature Choice
151b Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Most Severe Level
151bm Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Most Severe Level
153 Intake Manifold Air Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source
154 Intake Manifold Air Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
155 Intake Manifold 1 Temperature Choice
155b Intake Manifold 1 Temperature – Data Valid but Above Normal Operational Range – Most Severe Level
155bm Engine Coolant Temperature 1 Sensor Circuit — Voltage Above Normal or Shorted to High Source
187 Sensor Supply Voltage Number 2 Circuit Choice
187b Sensor Supply Voltage Number 2 Circuit – Voltage Below Normal or Shorted to Low Source
187bm Sensor Supply 2 Circuit – Voltage Below Normal, or Shorted to Low Source
195 Coolant Level Sensor 1 Circuit – Choice
195-2wire Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
195-3wire Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
196 Coolant Level Sensor 1 Circuit – Choice
196-2wire Coolant Level Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
196-3wire Coolant Level Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
197 Coolant Level Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
ISL & ISC Codes 200-300
221 Barometric Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
222 Barometric Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
227 Sensor Supply Voltage Number 2 Circuit Choice
227b Sensor Supply Voltage Number 2 Circuit – Voltage Above Normal or Shorted to High Source
227bm Sensor Supply 2 Circuit – Voltage Above Normal or Shorted to High Source
234 Engine Crankshaft Speed/Position Choice
234b Engine Crankshaft Speed/Position — Data Valid but Above Normal Operational Range – Most Severe Level
234bm Engine Crankshaft Speed/Position — Data Valid but Above Normal Operational Range – Most Severe Level
235 Coolant Level Low – Data Valid but Below Normal Operational Range – Most Severe Level
237 External Speed Command Input (Multiple Unit Synchronization – Data Erratic, Intermittent, or Incorrect
238 Sensor Supply 3 Circuit – Voltage Below Normal, or Shorted to Low Source
241 Vehicle Speed Sensor Circuit – Data Erratic, Intermittent, or Incorrect
242 Vehicle Speed Sensor Circuit Tampering Has Been Detected – Abnormal Rate of Change
245 Fan Control Circuit – Voltage Below Normal or Shorted to Low Source
253 Engine Oil Level – Data Valid But Below Normal Operational Range – Most Severe Level
268 Injector Metering Rail 1 Pressure – Data Erratic, Intermittent, or Incorrect
269 Antitheft Password Valid Indicator – Data Erratic, Intermittent, or Incorrect
271 High Fuel Pressure Solenoid Valve Circuit Choice
271b High Fuel Pressure Solenoid Valve Circuit – Voltage Below Normal or Shorted to Low Source
271cl High Fuel Pressure Solenoid Valve Circuit – Voltage Below Normal or Shorted to Low Source
272 High Fuel Pressure Solenoid Valve Circuit Choice
272b High Fuel Pressure Solenoid Valve Circuit – Voltage Above Normal or Shorted to High Source
272cl High Fuel Pressure Solenoid Valve Circuit – Voltage Above Normal or Shorted to High Source
275 Fuel Pumping Element Number 1 (Front – Mechanical System Not Responding Properly or Out of Adjustment
281 Fault Pump Pressurizing Assembly 1 – Mechanical System Not Responding Properly or Out of Adjustment
284 Engine Speed/Position Sensor (Crankshaft Supply Voltage Circuit – Voltage Below Normal or Shorted to Low Source
285 SAE J1939 Multiplexing PGN Timeout Error – Abnormal Update Rate
286 SAE J1939 Multiplexing Configuration Error – Out of Calibration
287 SAE J1939 Multiplexing Accelerator Pedal or Lever Sensor System Error – Received Network Data Error
288 SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Data Error – Received Network Data Error
291 Proprietary Datalink Error (OEM/Vehicle Datalink – Abnormal Update Rate
292 Auxiliary Temperature Sensor Input 1 – Special Instructions
293 Auxiliary Temperature Sensor Input 1 – Voltage Above Normal, or Shorted to High Source
294 Auxiliary Temperature Sensor Input 1 Circuit – Voltage Below Normal, or Shorted to Low Source
295 Barometric Pressure – Data Erratic, Intermittent, or Incorrect
296 Auxiliary Pressure Sensor Input 1 – Special Instructions
296a Auxiliary Pressure Sensor Input 1 – Special Instructions
296lrv Crankcase Pressure – Data Above Normal Operational Range – Severe Level
297 Auxiliary Pressure Sensor Input 1 Circuit – Voltage Above Normal, or Shorted to High Source
298 Auxiliary Pressure Sensor Input 1 Circuit – Voltage Below Normal, or Shorted to Low Source
ISL & ISC Codes 300-400
319 Real Time Clock Power Interrupt – Data Erratic, Intermittent, or Incorrect
322 Injector Solenoid Driver Cylinder 1 Circuit – Current Below Normal, or Open Circuit
323 Injector Solenoid Driver Cylinder 5 Circuit – Current Below Normal, or Open Circuit
324 Injector Solenoid Driver Cylinder 3 Circuit – Current Below Normal, or Open Circuit
325 Injector Solenoid Driver Cylinder 6 Circuit – Current Below Normal, or Open Circuit
331 Injector Solenoid Cylinder Number 2 Circuit – Current Below Normal or Open Circuit
332 Injector Solenoid Cylinder Number 4 Circuit – Current Below Normal or Open Circuit
334 Engine Coolant Temperature – Data Erratic, Intermittent, or Incorrect
341 Engine Control Module Data Lost – Data Erratic, Intermittent, or Incorrect
342 Electronic Calibration Code Incompatibility – Out of Calibration
343 Engine Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component
351 Injector Power Supply — Bad Intelligent Device or Component
352 Sensor Supply Voltage Number 1 Circuit – Voltage Below Normal or Shorted to Low Source
386 Sensor Supply Voltage Number 1 Circuit – Voltage Above Normal or Shorted to High Source
387 Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit – Voltage Above Normal or Shorted to High Source
ISL & ISC Codes 400-500
412 SAE J1587/J1922 Data Link – Can Not Transmit
415 Engine Oil Rifle Pressure Choice
415sn Engine Oil Rifle Pressure – Data Valid but Below Normal Operational Range – Most Severe Level
415sw Engine Oil Rifle Pressure – Data Valid but Below Normal Operational Range – Most Severe Level
418 Water-In-Fuel Indicator – Data Valid but Above Normal Operational Range – Least Severe Level
426 SAE J1939 Data Link – Cannot Transmit
427 SAE J1939 Datalink – Abnormal Update Rate
428 Water-In-Fuel Sensor Circuit – Voltage Above Normal or Shorted to High Source
429 Water-In-Fuel Sensor Circuit – Voltage Below Normal or Shorted to Low Source
431 Idle Validation Switch Circuit Choice
431iss Accelerator Pedal or Lever Idle Validation Circuit – Data Erratic, Intermittent, or Incorrect
431niss Accelerator Pedal or Lever Idle Validation Circuit – Data Erratic, Intermittent, or Incorrect
431sss Accelerator Pedal or Lever Idle Validation Circuit – Data Erratic, Intermittent, or Incorrect
432 Accelerator Pedal or Lever Idle Validation Circuit – Out of Calibration
433 Intake Manifold Pressure Sensor Circuit – Data Incorrect
434 Power Supply Lost With Ignition On – Data Erratic, Intermittent or Incorrect
435 Oil Pressure Switch Sensor Circuit – Data Erratic, Intermittent or Incorrect
436 Intake Manifold 1 Temperature – Data Erratic, Intermittent, or Incorrect
441 Battery 1 Voltage – Data Valid but Below Normal Operational Range – Moderately Severe Level
442 Battery 1 Voltage – Data Valid but Below Normal Operational Range – Moderately Severe Level
443 Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit — Voltage Below Normal or Shorted to Low Source
449 Fuel Pressure High Choice
449b Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Most Severe Level
449cl Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Most Severe Level
451 Injector Metering Rail Number 1 Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
452 Injector Metering Rail Number 1 Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
471 Engine Oil Level – Data Valid But Below Normal Operational Range – Least Severe Level
488 Intake Manifold 1 Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level
497 Multiple Unit Synchronization Switch – Data Erratic, Intermittent, or Incorrect
498 Engine Oil Level Sensor Circuit – Voltage Above Normal, or Shorted to High Source
499 Engine Oil Level Sensor Circuit – Voltage Below Normal, or Shorted to Low Source
ISL & ISC Codes 500-600
523 Auxiliary Intermediate (PTO Speed Switch Validation – Data Erratic, Intermittent, or Incorrect0
527 Auxiliary Input/Out Two Circuit Voltage Above Normal or Shorted to High Source
528 Auxiliary Alternate Torque Validation Switch – Data Erratic, Intermittent, or Incorrect
529 Auxiliary Input/Output Three Circuit – Voltage Above Normal, or Shorted to High Source
545 Turbocharger 1 Wastegate Control – Mechanical System Not Responding Properly or Out of Adjustment
551 Idle Validation Switch Circuit Choice
551iss Accelerator Pedal or Lever Idle Validation Circuit – Voltage Below Normal or Shorted to Low Source
551niss Accelerator Pedal or Lever Idle Validation Circuit – Voltage Below Normal or Shorted to Low Source
551sss Accelerator Pedal or Lever Idle Validation Circuit – Voltage Below Normal or Shorted to Low Source
553 Injector Metering Rail One Pressure – Data Valid but Above Normal Operational Range – Moderately Severe Level
554 Injector Metering Rail 1 Pressure – Data Erratic, Intermittent, or Incorrect
559 Fuel Pump Delivery Pressure Low Choice
559b Fuel Pump Delivery Pressure Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
559cl Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operational Range – Moderately Severe Level
584 Starter Relay Circuit – Voltage Above Normal or Shorted to High Source
585 Starter Relay Circuit – Voltage Below Normal or Shorted to Low Source
595 Turbocharger Number 1 Speed High Choice
595b Turbocharger Number 1 Speed High – Warning Level
595cl Turbocharger Number 1 Speed High – Data Valid but Above Normal Operational Range – Moderately Severe Level
596 Electrical Charging System Voltage High – Data Valid but Above Normal Operational Range – Moderately Severe Level
597 Electrical Charging System Voltage Low – Data Valid but Below Normal Operational Range – Moderately Severe Level
598 Electrical Charging System Voltage Low – Data Valid but Below Normal Operational Range – Most Severe Level
599 Auxiliary Commanded Dual Output Shutdown – Special Instructions
ISL & ISC Codes 600-700
649 Change Lubricating Oil and Filter – Condition Exists
687 Turbocharger Speed Sensor Choice
687b Turbocharger Speed Sensor – Below Normal Operating Range
687cl Turbocharger Number 1 Speed Low – Data Valid but Below Normal Operating Range – Moderately Severe Level
688 Engine Oil Level – Data Valid But Above Normal Operational Range – Most Severe Level
689 Engine Crankshaft Speed/Position – Data Erratic, Intermittent, or Incorrect
691 Turbocharger Number 1 Compressor Inlet Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source
692 Turbocharger Number 1 Compressor Inlet Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
ISL & ISC Codes 700-900
731 Engine Speed/Position Sensors Choice
731b Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment
731bm Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment
757 Electronic Control Module Data Lost – Condition Exists
778 Engine Speed Sensor (Camshaft Error – Data Erratic, Intermittent or Incorrect
779 Auxiliary Equipment Sensor Input Number 3 (OEM Switch – Root Cause Not Known)
784 Adaptive Cruise Control – Error
951 Cylinder Power Imbalance Detected
957 EGR Valve Position – Data Erratic, Intermittent, or Incorrect
958 VGT Position Sensor – Data Erratic, Intermittent, or Incorrect
1117 Power Lost Without Ignition Off Choice
1117auto Power Lost Without Ignition Off – Data Erratic, Intermittent or Incorrect
1117mar Power Lost Without Ignition Off – Data Erratic, Intermittent or Incorrect
1139 Injector Solenoid Driver Cylinder 1 – Mechanical System Not Responding Properly or Out of Adjustment
1141 Injector Solenoid Driver Cylinder 2 – Mechanical System Not Responding Properly or Out of Adjustment
1142 Injector Solenoid Driver Cylinder 3 – Mechanical System Not Responding Properly or Out of Adjustment
1143 Injector Solenoid Driver Cylinder 4 – Mechanical System Not Responding Properly or Out of Adjustment
1144 Injector Solenoid Driver Cylinder 5 – Mechanical System Not Responding Properly or Out of Adjustment
1145 Injector Solenoid Driver Cylinder 6 – Mechanical System Not Responding Properly or Out of Adjustment
ISL & ISC Codes 1200-1600
1228 EGR Valve Position – Data Erratic, Intermittent, or Incorrect
1229 VGT Position Sensor – Data Erratic, Intermittent, or Incorrect
1239 Accelerator Pedal or Lever Position Sensor 2 Circuit – Voltage Above Normal or Shorted to High Source
1241 Accelerator Pedal or Lever Position Sensor 2 Circuit – Voltage Below Normal or Shorted to Low Source
1242 Accelerator Pedal or Lever Position Sensor 1 and 2 – Data Erratic, Intermittent, or Incorrect
ISL & ISC Codes 1600-1700
1633 Komnet Datalink Cannot Transmit – Data Erratic, Intermittent, or Incorrect
1639 Auxiliary Equipment Sensor Input Number 3 (OEM Switch – Root Cause Not Known
1654 Engine Misfire Cylinder 1 – Condition Exists
1655 Engine Misfire Cylinder 2 – Condition Exists
1656 Engine Misfire Cylinder 3 – Condition Exists
1657 Engine Misfire Cylinder 4 – Condition Exists
1658 Engine Misfire Cylinder 5 – Condition Exists
1659 Engine Misfire Cylinder 6 – Condition Exists
1663 Catalyst Inlet Temperature Sensor Swapped with Outlet – Condition Exists
1664 Catalyst Missing – Condition Exists
1665 Exhaust Gas Temperature 1 Circuit – Voltage Below Normal, or Shorted to Low Source
1666 Exhaust Gas Temperature Circuit 1 – Voltage Above Normal, or Shorted to Low Source
1667 Exhaust Gas Temperature 1 – Data Erratic, Intermittent, or Incorrect
1668 Catalyst Tank Level Sensor Circuit – Voltage Below Normal, or Shorted to Low Source
1669 Catalyst Tank Level Sensor Circuit – Voltage Above Normal, or Shorted to High Source
1671 Catalyst Tank Level – Data Valid but Below Normal Operational Range – Moderately Severe Level.
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
2345 Turbocharger Speed Choice
2345b Turbocharger Speed – Invalid Rate of Change Detected
2345cl Turbocharger Speed Invalid Rate of Change detected – Abnormal Rate of Change
2346 Exhaust Gas Temperature Choice
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
2384 VGT Actuator Choice
2384b VGT Actuator – Voltage Below Normal or Shorted to Low Source
2384cl VGT Actuator Driver Circuit – Voltage Below Normal, or Shorted to Low Source
2385 VGT Actuator Choice
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