The International DT466 engine series continued its legacy into the mid-2000s, powering medium-duty trucks, buses, and vocational vehicles. Built for strength and serviceability, this generation featured early EGR systems that added complexity to diagnostics and repairs. That’s why quick access to fault codes makes all the difference.
International DT466 (2004–2005) Engine Overview
- Displacement: 7.6L
- Configuration: Inline 6-Cylinder
- Horsepower Range: 215–250 HP
- Torque: Up to 620 lb-ft
- Emissions System: EGR
- Applications: International 4000 series, IC Buses, and other medium-duty trucks
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Fault Codes for International DT466 (2004–2005)
| Fault | PID | SPN | FMI | SID | Title |
| 111 | No Errors Detected – Flash Code Only | ||||
| 112 | 168 | 3 | Electrical System Voltage B+ Out of Range High | ||
| 113 | 168 | 4 | Electrical System Voltage B+ Out of Range Low | ||
| 114 | 110 | 4 | Engine Coolant Temperature Signal Out of Range Low | ||
| 115 | 110 | 3 | Engine Coolant Temperature Signal Out of Range High | ||
| 121 | 102 | 3 | Intake Manifold Absolute Pressure Signal Out of Range High | ||
| 122 | 102 | 4 | Intake Manifold Absolute Pressure Signal Out of Range Low | ||
| 123 | 102 | 2 | Intake Manifold Absolute Pressure Signal In Range Fault | ||
| 124 | 164 | 4 | Injection Control Pressure Signal Out of Range Low | ||
| 125 | 164 | 3 | Injection Control Pressure Signal Out of Range High | ||
| 126 | 118 | 4 | Engine Brake Control Pressure Signal Out of Range Low | ||
| 127 | 118 | 3 | Engine Brake Control Pressure Signal Out of Range High | ||
| 131 | 91 | 4 | APS Signal Out of Range Low | ||
| 132 | 91 | 3 | APS Signal Out of Range High | ||
| 133 | 91 | 2 | APS Signal In Range DTC | ||
| 134 | 91 | 7 | APS Signal and IVS Disagree | ||
| 135 | 11 | 230 | Idle Validation Switch Circuit Fault | ||
| 136 | 94 | 4 | Engine Fuel Pressure Signal Out of Range Low | ||
| 137 | 94 | 3 | Engine Fuel Pressure Signal Out of Range High | ||
| 141 | 84 | 4 | Vehicle Speed Sensor Signal Out of Range Low | ||
| 142 | 84 | 3 | Vehicle Speed Sensor Signal Out of Range High | ||
| 143 | 2 | 21 | Incorrect CMP Signal Signature | ||
| 145 | 12 | 21 | CMP Signal Inactive | ||
| 146 | 12 | 64 | CKP Signal Inactive | ||
| 147 | 2 | 64 | Incorrect CKP Signal Signature | ||
| 151 | 108 | 3 | Barometric Absolute Pressure Signal Out of Range High | ||
| 152 | 108 | 4 | Barometric Absolute Pressure Signal Out of Range Low | ||
| 153 | 97 | 4 | Water In Fuel Signal Out of Range Low | ||
| 154 | 171 | 4 | Inlet Air Temperature Signal Out of Range Low | ||
| 155 | 171 | 3 | Inlet Air Temperature Signal Out of Range High | ||
| 161 | 105 | 4 | Manifold Air Temperature Signal Out of Range Low | ||
| 162 | 105 | 3 | Manifold Air Temperature Signal Out of Range High | ||
| 163 | 27 | 4 | Exhaust Gas Recirculation Valve Position Signal Out of Range Low | ||
| 211 | 100 | 4 | Engine Oil Pressure Signal Out of Range Low | ||
| 212 | 100 | 3 | Engine Oil Pressure Signal Out of Range High | ||
| 215 | 84 | 8 | Vehicle Speed Sensor Signal Frequency Out of Range High | ||
| 225 | 100 | EOP Sensor Signal In Range Fault | |||
| 231 | 2 | 250 | ATA Data Communication Link Error | ||
| 236 | 111 | 2 | ECL Switch Circuit Fault | ||
| 241 | 11 | 42 | Injection Control Pressure Regulator OCC Self Test Failed | ||
| 246 | 11 | 56 | Engine Fan – OCC Self Test Fault | ||
| 247 | 121 | 11 | Engine Brake Enable OCC Self Test Failed | ||
| 251 | 11 | 38 | Inlet Air Heater OCC Self Test Failed | ||
| 256 | 11 | 55 | Radiator Shutter Enable OCC Fault | ||
| 261 | 11 | 27 | Variable Geometry Turbo Control OCC Self Test Failed | ||
| 267 | 11 | 39 | Engine Crank Inhibit OCC Self Test Failed | ||
| 311 | 175 | 4 | Engine Oil Temperature Signal Out of Range Low | ||
| 312 | 175 | 3 | Engine Oil Temperature Signal Out of Range High | ||
| 313 | 100 | 1 | Engine Oil Pressure Below Warning Level | ||
| 314 | 100 | 7 | Engine Oil Pressure Below Critical Level | ||
| 315 | 190 | Engine Speed Above Warning Level | |||
| 316 | 110 | 1 | Engine Coolant Temperature Unable to Reach Commanded Set Point | ||
| 321 | 110 | Engine Coolant Temperature Above Warning Level | |||
| 322 | 110 | 7 | Engine Coolant Temperature Above Critical Level | ||
| 323 | 111 | 1 | Engine Coolant Level Below Warning / Critical Level | ||
| 324 | 71 | 14 | Idle Shutdown Timer Enabled Engine Shutdown | ||
| 325 | 110 | 14 | Power Reduced, Matched to Cooling System Performance | ||
| 331 | 164 | Injection Control Pressure Above System Working Range | |||
| 332 | 164 | 13 | Injection Control Pressure Above Spec. – Engine Not Running | ||
| 333 | 164 | 10 | Injection Control Pressure Above / Below Desired Level | ||
| 334 | 164 | 7 | ICP Unable to Achieve Setpoint in Time (Poor Performance) | ||
| 335 | 164 | 1 | ICP Unable to Build Pressure During Cranking | ||
| 341 | 4 | 34 | Exhaust Back Pressure Signal Out of Range Low | ||
| 342 | 3 | 34 | Exhaust Back Pressure Signal Out of Range High | ||
| 343 | 34 | Excessive Exhaust Back Pressure (Gauge) | |||
| 344 | 13 | 34 | Exhaust Back Pressure Above Spec. – Engine Off | ||
| 345 | 2 | 27 | Faults Detected During VGT Portion of AMS Test | ||
| 346 | 27 | 2 | Faults Detected During EGR Portion of AMS Test | ||
| 351 | 7 | 34 | Change in Exhaust Back Pressure Did Not Occur When Expected | ||
| 353 | 5 | 27 | Variable Geometry Turbo Control Over Duty Cycle | ||
| 354 | 6 | 27 | Variable Geometry Turbo Control Under Duty Cycle | ||
| 355 | 103 | Variable Geometry Turbo Overspeed | |||
| 361 | 10 | 27 | VGT Control Input (EBP) Above or Below Desired Level | ||
| 365 | 27 | 10 | EGR Valve Position Above / Below Desired Level | ||
| 368 | 7 | 146 | EGR Drive Module / ECM Communication Fault | ||
| 371 | 94 | Engine Fuel Pressure Above Normal Operating Range | |||
| 372 | 94 | 1 | Engine Fuel Pressure Below Normal Operating Range | ||
| 421 | 5 | 1 | High Side to Low Side Open – Cylinder 1 | ||
| 422 | 5 | 2 | High Side to Low Side Open – Cylinder 2 | ||
| 423 | 5 | 3 | High Side to Low Side Open – Cylinder 3 | ||
| 424 | 5 | 4 | High Side to Low Side Open – Cylinder 4 | ||
| 425 | 5 | 5 | High Side to Low Side Open – Cylinder 5 | ||
| 426 | 5 | 6 | High Side to Low Side Open – Cylinder 6 | ||
| 431 | 4 | 1 | High Side Shorted to Low Side – Cylinder 1 | ||
| 432 | 4 | 2 | High Side Shorted to Low Side – Cylinder 2 | ||
| 433 | 4 | 3 | High Side Shorted to Low Side – Cylinder 3 | ||
| 434 | 4 | 4 | High Side Shorted to Low Side – Cylinder 4 | ||
| 435 | 4 | 5 | High Side Shorted to Low Side – Cylinder 5 | ||
| 436 | 4 | 6 | High Side Shorted to Low Side – Cylinder 6 | ||
| 451 | 6 | 1 | High Side Short to Ground or VBAT – Cylinder 1 | ||
| 452 | 6 | 2 | High Side Short to Ground or VBAT – Cylinder 2 | ||
| 453 | 6 | 3 | High Side Short to Ground or VBAT – Cylinder 3 | ||
| 454 | 6 | 4 | High Side Short to Ground or VBAT – Cylinder 4 | ||
| 455 | 6 | 5 | High Side Short to Ground or VBAT – Cylinder 5 | ||
| 456 | 6 | 6 | High Side Short to Ground or VBAT – Cylinder 6 | ||
| 523 | 4 | 233 | IDM VIGN Voltage Low | ||
| 525 | 6 | 254 | IDM Fault | ||
| 533 | 3 | 221 | IDM Relay Voltage High | ||
| 534 | 4 | 221 | IDM Relay Voltage Low | ||
| 543 | 7 | 155 | ECM / IDM Communications Fault | ||
| 546 | 121 | 1 | Engine Brake Control Pressure Below Expected Range | ||
| 547 | 121 | Engine Brake Control Pressure Above Expected Range | |||
| 551 | 12 | 22 | IDM / CMPO Signal Inactive | ||
| 552 | 2 | 22 | IDM Incorrect CMPO Signal Signature | ||
| 553 | 11 | 22 | IDM / CKPO Signal Inactive | ||
| 554 | 8 | 22 | IDM Incorrect CKPO Signal Signature | ||
| 613 | 1 | 252 | ECM / IDM Software Not Compatible | ||
| 614 | 13 | 252 | EFRC / ECM Configuration Mismatch | ||
| 621 | 1 | 253 | Engine Using Mfg. Default Rating | ||
| 622 | 253 | Engine Using Field Default Rating | |||
| 623 | 13 | 253 | Invalid Engine Family Rating Code (EFRC) | ||
| 624 | 14 | 240 | Field Default Active | ||
| 626 | 8 | 254 | Unexpected Reset Fault | ||
| 631 | 2 | 240 | Read Only Memory (ROM) Self Test Fault | ||
| 632 | 12 | 254 | Random Access Memory (RAM) – CPU Self Test Fault | ||
| 655 | 13 | 240 | Programmable Parameter List Level Incompatible | ||
| 661 | 11 | 240 | RAM Programmable Parameter List Corrupt | ||
| 664 | 14 | 253 | Calibration Level Incompatible | ||
| 665 | 14 | 252 | Programmable Parameter Memory Content Corrupt |
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