Engine - Engine and Mounting Section 110-0030 SM 1571 12-98 5 ELECTRONIC FUEL SYSTEM DIAGNOSTIC CODES Error Code Description Fault Lamp 111 112 113 114 115 116 117 118 119 121 122 123 131 132 135 141 143 144 145 151 153 154 155 221 222 231 232 233 234 235 254 259 261 263 265 316 318 342 343 346 415 422 423 431 432 441 442 451 452 455 467 468 511 514 524 551 553 554 555 719 729 753 ECM Hardware Internal Failure - Mission disabling Timing Actuator - Mechanically stuck Timing Actuator - Component shorted high Timing Actuator - Component shorted low Engine Speed Sensor - Both signals lost Fuel Timing Pressure Sensor - Component shorted high Fuel Timing Pressure Sensor - Component shorted low Fuel Pump Pressure Sensor - Component shorted high Fuel Pump Pressure Sensor - Component shorted low Engine Speed Sensor - One signal lost Boost Pressure Sensor - Component shorted high Boost Pressure Sensor - Component shorted low Throttle Position Sensor - Component shorted high Throttle Position Sensor - Component shorted low Oil Pressure Sensor - Component shorted high Oil Pressure Sensor - Component shorted low Oil Pressure Sensor - Data below normal range Engine Coolant Temperature Sensor - Component shorted high Engine Coolant Temperature Sensor - Component shorted low Engine Coolant Temperature Sensor - Data above normal range Intake Manifold Temperature Sensor - Component shorted high Intake Manifold Temperature Sensor - Component shorted low Intake Manifold Temperature Sensor - Data above normal range Ambient Air Pressure Sensor - Component shorted high Ambient Air Pressure Sensor - Component shorted low Coolant Pressure Sensor - Component shorted high Coolant Pressure Sensor - Component shorted low Coolant Pressure, Engine Protection - Low coolant pressure Engine Speed - Data above normal range Engine Coolant Level - Data below normal range Fuel Shutoff Value - Component shorted low Fuel Shutoff Solenoid - Fuel shutoff valve stuck open Fuel Temperature, Engine Protection - Fuel temperature high Fuel Temperature Sensor - Component shorted high Fuel Temperature Sensor - Component shorted low Fuel Pump Actuator - Component shorted high or low Fuel Pump Flow - Mismatch between estimated and desired pressures ECM Not Calibrated - ECM software mission disabling failure ECM Hardware Failure - Warning non mission disabling ECM Software - Read/write, checksum error - Non mission disabling Oil Pressure Sensor - Data indicates very low oil pressure Engine Coolant Level Sensor Signals - Data invalid Fuel Timing Pressure Sensor - In-range failure Throttle Position Idle Validation Switch - Invalid Throttle Position Idle Validation Switch - Switch position & throttle percent mismatch Battery Voltage, Unswitched - Data below normal engine range Battery Voltage, Unswitched - Data above normal engine range Fuel Pressure Sensor - Component shorted high Fuel Pressure Sensor - Component shorted low Fuel Control Valve - Component shorted high or open Timing Fueling Flow - Mismatch between estimated and desired timing Fueling Rail Flow - Mismatch between estimated and desired rail pressure Fuel Control Valve - Component shorted low Fuel Control Valve - Actuator mechanically stuck open Alternate Droop Switch Fault Idle Validation Circuit - No voltage detected on both off-idle and idle pins Engine Fueling Pressure Exceeded - Data above normal range Fuel Pressure Sensor - In-range failure Blowby Pressure, Engine Protection - Blowby pressure high Blowby Pressure Sensor - Component shorted high Blowby Pressure Sensor - Component shorted low Engine Speed Sensor - Engine speed signals do not match Red Red Yellow Yellow Red Red Red Yellow Yellow Yellow Yellow Yellow Red Red Yellow Yellow Amber Yellow Yellow Amber Yellow Yellow Amber Yellow Yellow Yellow Yellow Amber Red Amber Red Red Amber Yellow Yellow Yellow Yellow Red Yellow Yellow Amber Yellow Yellow Yellow Amber Yellow Yellow Red Red Red Yellow Yellow Red Red Yellow Red Red Yellow Amber Yellow Yellow Off