The International MaxxForce DT engine (2006–2009) powered countless medium-duty trucks, delivering strong performance while meeting emissions requirements of its time. With its HEUI fuel system, EGR setup, and emissions controls, it’s a reliable platform—if you can get quick answers when a fault code pops up.
Having a complete, plain-English fault code list can save you hours of downtime and troubleshooting.
International MaxxForce DT (2006–2009) Engine Overview
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Displacement: 7.6L
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Horsepower Range: 210–300 HP
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Torque: Up to 860 lb-ft
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Emissions System: EGR
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Fuel System: HEUI
Applications: International DuraStar, WorkStar, and other medium-duty commercial trucks.
📍 Get FREE Fault Code Information for all makes and models in Diesel Repair → Diesel Repair
Fault Codes for International MaxxForce DT (2006–2009)
| Fault | PID | SPN | FMI | SID | Title |
| 1112 | 168 | 3 | B+ Out of Range High | ||
| 1113 | 168 | 4 | B+ Out of Range Low | ||
| 1114 | 110 | 4 | ECT Signal Out of Range Low | ||
| 1115 | 110 | 3 | ECT Signal Out of Range High | ||
| 1121 | 102 | 3 | MAP Signal Out of Range High | ||
| 1122 | 102 | 4 | MAP Signal Out of Range Low | ||
| 1124 | 164 | 4 | ICP Signal Out of Range Low | ||
| 1125 | 164 | 3 | ICP Signal Out of Range High | ||
| 1126 | 7139 | 4 | BCP Signal Out of Range Low | ||
| 1127 | 7139 | 3 | BCP Signal Out of Range High | ||
| 1131 | 91 | 4 | APS Signal Out of Range Low | ||
| 1132 | 91 | 3 | APS Signal Out of Range High | ||
| 1133 | 91 | 2 | APS In-Range Fault | ||
| 1134 | 91 | 7 | APS and IVS Disagree | ||
| 1135 | 558 | 11 | IVS Signal Fault | ||
| 1136 | 94 | 4 | EFP Signal Out of Range Low | ||
| 1137 | 94 | 3 | EFP Signal Out of Range High | ||
| 1141 | 84 | 4 | VSS Signal Out of Range Low | ||
| 1142 | 84 | 3 | VSS Signal Out of Range High | ||
| 1143 | 8021 | 2 | CMP Signal Incorrect for CKP Sync | ||
| 1144 | 8021 | 8 | CKP Signal Noise Detected | ||
| 1146 | 8064 | 12 | CKP Signal Inactive | ||
| 1147 | 8064 | 2 | CKP Incorrect Signal Signature | ||
| 1151 | 108 | 3 | BAP Signal Out of Range High | ||
| 1152 | 108 | 4 | BAP Signal Out of Range Low | ||
| 1154 | 171 | 4 | IAT Signal Out of Range Low | ||
| 1155 | 171 | 3 | IAT Signal Out of Range High | ||
| 1156 | 102 | MAP Signal In-Range High – MAP Above BARO at Start | |||
| 1157 | 102 | 1 | MAP Signal In-Range Low – MAP Below BARO at Start | ||
| 1161 | 105 | 4 | MAT Signal Out of Range Low | ||
| 1162 | 105 | 3 | MAT Signal Out of Range High | ||
| 1178 | 7316 | VGT Actuator Temp Above High Limit | |||
| 1211 | 100 | 4 | EOP Signal Out of Range Low | ||
| 1212 | 100 | 3 | EOP Signal Out of Range High | ||
| 1213 | 8029 | 4 | Remote Throttle Signal Out of Range Low | ||
| 1214 | 8029 | 3 | Remote Throttle Signal Out of Range High | ||
| 1222 | 597 | 2 | Brake Switch Circuit Fault | ||
| 1236 | 111 | 2 | ECL In-Range Circuit Fault | ||
| 1253 | 97 | 3 | WIF Signal Out of Range Low | ||
| 1254 | 97 | 4 | WIF Signal Out of Range High | ||
| 1255 | 97 | 5 | WIF Signal Open / Circuit Fault | ||
| 1276 | 8366 | 6 | IPR Short to B+ Over-Temperature | ||
| 1277 | 8366 | 5 | IPR Short Circuit | ||
| 1287 | 3464 | 1 | ITVL OCC Self-Test Failed | ||
| 1288 | 3464 | ITVH OCC Self-Test Failed | |||
| 1292 | 7318 | 2 | ITVP In-Range Fault | ||
| 1293 | 7318 | 3 | ITVP Signal Out of Range High | ||
| 1294 | 7318 | 4 | ITVP Signal Out of Range Low | ||
| 1298 | 51 | 2 | ITV Operation Fault – Under V, Over Amp, Over Temp | ||
| 1299 | 175 | 10 | EOT In-Range Fault | ||
| 1311 | 175 | 4 | EOT Signal Out of Range Low | ||
| 1312 | 175 | 3 | EOT Signal Out of Range High | ||
| 1362 | 412 | EGR Valve Internal High Circuit Failure | |||
| 1363 | 412 | 1 | EGR Valve Internal Low Circuit Failure | ||
| 1396 | 7137 | 12 | EGRV Initialization Fault | ||
| 1397 | 7137 | 4 | EGR Position In-Range Fault | ||
| 1398 | 8327 | 7 | EGR Unable to Achieve Desired Position | ||
| 1729 | 3251 | 4 | EGDP Signal Out of Range Low | ||
| 1731 | 3251 | 3 | EGDP Signal Out of Range High | ||
| 1737 | 3241 | 4 | EGT1 Signal Out of Range Low | ||
| 1738 | 3241 | 3 | EGT1 Signal Out of Range High | ||
| 1741 | 3242 | 4 | EGT2 Signal Out of Range Low | ||
| 1742 | 3242 | 3 | EGT2 Signal Out of Range High | ||
| 1744 | 3245 | 4 | EGT3 Signal Out of Range Low | ||
| 1745 | 3245 | 3 | EGT3 Signal Out of Range High | ||
| 2159 | 8365 | 7 | Brake Applied While APS Applied | ||
| 2174 | 8321 | 2 | VGT Communication Fault | ||
| 2175 | 8321 | 7 | VGT Performance Fault | ||
| 2176 | 8321 | VGT Commanded Position Over a Threshold | |||
| 2177 | 8321 | 1 | VGT Commanded Position Below a Threshold | ||
| 2179 | 97 | 2 | Water In Fuel Detected | ||
| 2232 | 8331 | 7 | Resume Normal Speed Control Due to Momentary CAN Loss | ||
| 2242 | 1442 | 2 | ICP Adaptation In-Range Fault | ||
| 2313 | 100 | 1 | EOP Below Warning Level | ||
| 2314 | 100 | 7 | EOP Below Critical Level | ||
| 2315 | 190 | Engine Speed Above Warning Level | |||
| 2319 | 518 | 2 | Torque Limited to Control Engine Overheat | ||
| 2321 | 110 | ECT Above Warning Level | |||
| 2322 | 110 | 7 | ECT Above Critical Level | ||
| 2323 | 111 | 1 | ECL Below Warning / Critical Level | ||
| 2324 | 593 | 14 | Engine Stopped by IST | ||
| 2327 | 164 | 10 | ICP Abnormal Rate of Change | ||
| 2332 | 164 | 13 | ICP Above KOEO Spec | ||
| 2335 | 164 | 1 | ICP Unable to Build During Engine Cranking | ||
| 2351 | 7129 | 1 | EBP Below Desired Level | ||
| 2352 | 7129 | EBP Above Desired Level | |||
| 2368 | 8146 | 7 | EGR Valve Communication Fault | ||
| 2369 | 1378 | 2 | Engine Oil | ||
| 2371 | 94 | Fuel Pressure Above Normal | |||
| 2372 | 94 | 1 | Fuel Pressure Below Normal | ||
| 2388 | 2659 | EGR Flow Excessive – Possible Leak to Atmosphere | |||
| 2389 | 2659 | 1 | EGR Flow Insufficient – Possible Plugged System | ||
| 2391 | 2791 | 11 | EGR Valve Internal Circuit Failure | ||
| 2392 | 7138 | 6 | EGR Duty Cycle Above Limit | ||
| 2393 | 7137 | 2 | EGR Position Sensor Fault | ||
| 2394 | 8146 | 2 | EGR Valve Not Receiving ECM CAN Messages | ||
| 2395 | 7317 | 3 | EGRH OCC Self-Test Failed | ||
| 2396 | 7317 | 4 | EGRL OCC Self-Test Failed | ||
| 2544 | 8329 | 7 | ECM Unable to Send CAN Messages | ||
| 2545 | 8330 | 7 | ECM Not Receiving Body Controller CAN Messages | ||
| 2546 | 7121 | 1 | BCP Below Desired | ||
| 2547 | 7121 | BCP Above Desired | |||
| 2549 | 8321 | 12 | ECM Not Receiving VGT CAN Messages | ||
| 2673 | 3242 | 10 | EGT2 Not Warming Along With Engine | ||
| 2674 | 3242 | 2 | EGT2 Reading Off Compared to EGT1 and EGT3 | ||
| 2675 | 3241 | 2 | EGT1 Temp Not Increasing With Engine Temp | ||
| 2676 | 3241 | 1 | EGT1 Reading Off Compared to EGT2 and EGT3 | ||
| 2677 | 3245 | 2 | EGT3 Not Warming Along With Engine | ||
| 2678 | 3245 | 1 | EGT3 Reading Off Compared to EGT1 and EGT2 | ||
| 2681 | 3242 | 1 | EGT2 Reading Off Compared to EGT1 and EGT3 | ||
| 2687 | 8302 | 1 | DPF, Low Flow Resistance | ||
| 2688 | 8302 | DPF Over Temperature – Possible Filter Damage | |||
| 2699 | 3251 | 1 | EGDP Below Desired Level | ||
| 2732 | 3251 | 2 | EGDP Stuck In-Range Fault | ||
| 2733 | 3251 | 10 | EGDP Mismatch Between Key-On / Off | ||
| 2772 | 3524 | Excessive Time – Manual Inhibit Set for DPF Regen | |||
| 2782 | 8317 | 13 | DPF Servicing Required | ||
| 2783 | 8318 | 13 | DPF Load – Above Warning Level | ||
| 2784 | 8319 | 13 | DPF Load – Above Critical Level 2 – Engine De-rate | ||
| 2785 | 8320 | 13 | DPF Load – Above Critical Level 2 – Further Engine De-rate | ||
| 3333 | 8492 | ICP Above Desired Level | |||
| 3334 | 8492 | 1 | ICP Below Desired Level | ||
| 3338 | 7129 | 17 | KOER STD – EBP Unable to Build During Test | ||
| 3339 | 7129 | 15 | KOER STD – EBP Too High During Test | ||
| 3341 | 1209 | 4 | EBP Signal Out of Range Low | ||
| 3342 | 1209 | 3 | EBP Signal Out of Range High | ||
| 3345 | 7136 | VGT Control Over Duty | |||
| 3346 | 1209 | AMT – EBP Unable to Build During EGR Test | |||
| 3347 | 7136 | 1 | VGT Control Under Duty | ||
| 3348 | 1209 | 1 | AMT – EBP Too High During EGR Test | ||
| 3373 | 164 | 15 | ICP Too High During Test | ||
| 3374 | 164 | 17 | ICP Unable to Build During Test | ||
| 3786 | 8326 | 2 | DPF Test – Test Unsuccessful | ||
| 4411 | 8001 | 6 | Cylinder 1 Close Coil – Open Circuit | ||
| 4412 | 8002 | 6 | Cylinder 2 Close Coil – Open Circuit | ||
| 4413 | 8003 | 6 | Cylinder 3 Close Coil – Open Circuit | ||
| 4414 | 8004 | 6 | Cylinder 4 Close Coil – Open Circuit | ||
| 4415 | 8005 | 6 | Cylinder 5 Close Coil – Open Circuit | ||
| 4416 | 8006 | 6 | Cylinder 6 Close Coil – Open Circuit | ||
| 4421 | 8001 | 5 | Cylinder 1 Open Coil – Open Circuit | ||
| 4422 | 8002 | 5 | Cylinder 2 Open Coil – Open Circuit | ||
| 4423 | 8003 | 5 | Cylinder 3 Open Coil – Open Circuit | ||
| 4424 | 8004 | 5 | Cylinder 4 Open Coil – Open Circuit | ||
| 4425 | 8005 | 5 | Cylinder 5 Open Coil – Open Circuit | ||
| 4426 | 8006 | 5 | Cylinder 6 Open Coil – Open Circuit | ||
| 4431 | 8001 | 4 | Cylinder 1 Open Coil – Short Circuit | ||
| 4432 | 8002 | 4 | Cylinder 2 Open Coil – Short Circuit | ||
| 4433 | 8003 | 4 | Cylinder 3 Open Coil – Short Circuit | ||
| 4434 | 8004 | 4 | Cylinder 4 Open Coil – Short Circuit | ||
| 4435 | 8005 | 4 | Cylinder 5 Open Coil – Short Circuit | ||
| 4436 | 8006 | 4 | Cylinder 6 Open Coil – Short Circuit | ||
| 4441 | 8001 | 3 | Cylinder 1 Close Coil – Short Circuit | ||
| 4442 | 8002 | 3 | Cylinder 2 Close Coil – Short Circuit | ||
| 4443 | 8003 | 3 | Cylinder 3 Close Coil – Short Circuit | ||
| 4444 | 8004 | 3 | Cylinder 4 Close Coil – Short Circuit | ||
| 4445 | 8005 | 3 | Cylinder 5 Close Coil – Short Circuit | ||
| 4446 | 8006 | 3 | Cylinder 6 Close Coil – Short Circuit | ||
| 4515 | 8151 | 5 | Bank A Injector Open Coil Short | ||
| 4516 | 8151 | 6 | Bank A Injector Close Coil Short | ||
| 4521 | 8152 | 5 | Bank B Injector B Injector Open Coil Short | ||
| 4522 | 8152 | 6 | Bank B Injector Close Coil Short | ||
| 4551 | 8021 | 12 | CMP Signal Inactive | ||
| 4552 | 8022 | 2 | CMP Loss of Sync | ||
| 4553 | 8022 | 12 | CKP Signal Inactive | ||
| 4554 | 8022 | 7 | CKP Loss of Sync | ||
| 4555 | 8064 | 8 | CKP Signal Noise Detected | ||
| 4556 | 8022 | 8 | CKP Period Too Short | ||
| 4561 | 8001 | Cylinder 1 Balance Below Min Limit | |||
| 4562 | 8002 | Cylinder 2 Balance Below Min Limit | |||
| 4563 | 8003 | Cylinder 3 Balance Below Min Limit | |||
| 4564 | 8004 | Cylinder 4 Balance Below Min Limit | |||
| 4565 | 8005 | Cylinder 5 Balance Below Min Limit | |||
| 4566 | 8006 | Cylinder 6 Balance Below Min Limit | |||
| 4571 | 8001 | Cylinder 1 Balance Max Limit Exceeded | |||
| 4572 | 8002 | Cylinder 2 Balance Max Limit Exceeded | |||
| 4573 | 8003 | Cylinder 3 Balance Max Limit Exceeded | |||
| 4574 | 8004 | Cylinder 4 Balance Max Limit Exceeded | |||
| 4575 | 8005 | Cylinder 5 Balance Max Limit Exceeded | |||
| 4576 | 8006 | Cylinder 6 Balance Max Limit Exceeded | |||
| 4611 | 8021 | 13 | CKP Signature One Tooth Off | ||
| 4612 | 8021 | 7 | CMP to CKP Incorrect Reference | ||
| 5382 | 1136 | ECM Error – Over Temperature | |||
| 5618 | 8334 | 2 | ECM Error – SPI-BUS Error 1 | ||
| 5619 | 8334 | 12 | ECM Error – SPI-BUS Error 2 | ||
| 5627 | 8333 | 12 | ECM Error – Checksum Program | ||
| 5628 | 8333 | 2 | ECM Error – Checksum Dataset | ||
| 5632 | 8254 | 12 | ECM Error – RAM / CPU Self-Test Fault | ||
| 5633 | 8254 | ECM Error – CPU Load Above Maximum | |||
| 5634 | 8336 | 12 | ECM Error – MQPS Daisy Chain Failure | ||
| 5635 | 8337 | 12 | ECM Wrror – OCT Daisy Chain Failure | ||
| 5636 | 8338 | 12 | ECM Error – QPS Daisy Chain Failure | ||
| 5641 | 86 | 14 | ECM Error – CC Monitoring | ||
| 5642 | 94 | 14 | ECM Error – Fuel Cut Off Monitoring | ||
| 5643 | 183 | 14 | ECM Error – Post Inj Monitoring | ||
| 5644 | 190 | 2 | ECM Error – Engine Speed Limitation | ||
| 5645 | 7253 | 7 | ECM Error – EEPROM Failure | ||
| 5646 | 190 | 14 | ECM Error – Engine Speed Monitoring | ||
| 5647 | 558 | 14 | ECM Error – PVS Monitoring | ||
| 5648 | 976 | 14 | ECM Error – PTO Monitoring | ||
| 5649 | 1136 | 14 | ECM Error – A/D Conversion Monitoring | ||
| 5651 | 7132 | 14 | ECM Error – MFMA Monitoring | ||
| 5652 | 8240 | 14 | ECM Error – NVMY Monitoring | ||
| 5653 | 8300 | 14 | ECM Error – PPS Monitoring | ||
| 5654 | 8329 | 14 | ECM Error – CAN Monitoring | ||
| 5655 | 8332 | 14 | ECM Error – Service Tool Monitoring | ||
| 5656 | 8335 | 14 | ECM Error – Processor Monitoring | ||
| 5666 | 8339 | 4 | VREF Engine Voltage Below Min | ||
| 5667 | 8339 | 3 | VREF Engine Voltage Above Max | ||
| 5668 | 8340 | 4 | VREF Chassis Voltage Below Min | ||
| 5669 | 8340 | 3 | VREF Chassis Voltage Above Max | ||
| 5671 | 8341 | 4 | VREF Body Voltage Below Min | ||
| 5672 | 8341 | 3 | VREF Body Voltage Above Max |
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