ECU/A00 - Engine Control Unit Diagnostic Trouble Codes

NOTE: Some codes may be activated that are not addressed in this book. These codes are of low severity. Contact your John Deere dealer at your convenience.

Control Unit SPN FMI Pri. Description
ECU/A00 94 01 1 Fuel pressure too low - less than 300 kPa / 44 PSI (12.5 L)
ECU/A00 94 03 1 Fuel Pressure Sensor voltage out of range high - greater than 4.75 VDC (8.1 L)
ECU/A00 94 03 2 Fuel Pressure Sensor voltage out of range high (6.8 L, 9.0 L, 12.5 L)
ECU/A00 94 04 1 Fuel Pressure Sensor voltage out of range low. (8.1 L)
ECU/A00 94 04 2 Fuel Pressure Sensor voltage out of range low. (6.8 L, 9.0 L, 12.5 L)
ECU/A00 94 10 2 Sudden decrease in rail pressure detected. (8.1 L)
ECU/A00 94 13 1 Fuel Pressure Sensor reading is higher than expected. (8.1 L)
ECU/A00 94 16 2 Fuel pressure is too high - above 820 kPa (119 PSI) at 900 RPM or above 890 kPa (129 PSI) at 2100 RPM. (12.5 L)
ECU/A00 94 17 2 During starting, rail pressure is not developed after a short time cranking. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 94 18 2 Fuel pressure too low - less than 400 kPa / 58 PSI. (12.5 L)
ECU/A00 97 03 2 Water in Fuel Sensor (cc# 136) voltage out of range high. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 97 04 2 Water in Fuel Sensor (cc# 136) voltage out of range low. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 97 16 1 Water is detected in fuel. Drain water separator bowl. (6.8 L, 9.0 L)
ECU/A00 97 31 1 Water is detected in fuel. Drain water separator bowl. (12.5 L)
ECU/A00 97 31 2 Water is detected in fuel. Drain water separator bowl. (8.1 L)
ECU/A00 100 01 1 Oil Pressure Sensor is open after engine RPM is above cranking speed. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 100 03 2 Oil pressure sensor is out of range high. (6.8 L, 9.0 L)
ECU/A00 100 04 2 Oil Pressure Sensor is closed when engine is not running. (8.1 L, 12.5 L)
ECU/A00 100 04 2 Oil pressure sensor is out of range low. (6.8 L, 9.0 L)
ECU/A00 100 18 2 Oil pressure low. (6.8 L, 9.0 L)
ECU/A00 100 31 2 Oil pressure detected with zero engine speed. (6.8 L, 9.0 L)
ECU/A00 102 02 2 Computed boost pressure does not agree with manifold air pressure sensor. (6.8 L, 9.0 L)
ECU/A00 102 03 2 Manifold air pressure sensor out of range high. (6.8 L, 9.0 L)
ECU/A00 102 04 2 Manifold air pressure sensor out of range low. (6.8 L, 9.0 L)
ECU/A00 103 00 2 Turbo speed high - most severe level. (6.8 L, 9.0 L)
ECU/A00 103 02 2 Computed turbo speed does not agree with measured turbo speed. (6.8 L, 9.0 L)
ECU/A00 103 05 2 Open circuit detected in turbo speed sensor or circuits (cc# 5417 and/or cc# 5435). (6.8 L, 9.0 L)
ECU/A00 103 06 2 Short circuit to ground detected in detected in turbo speed circuit (cc# 5435). (6.8 L, 9.0 L)
ECU/A00 103 08 2 Turbo speed incorrect. (6.8 L, 9.0 L)

 

OUO6075,00003DE -19-21JUN06-1/6


Control Unit SPN FMI Pri. Description
ECU/A00 103 31 2 Turbo speed missing. (6.8 L, 9.0 L)
ECU/A00 105 00 1 Manifold air temperature high - most severe level. (6.8 L, 9.0 L)
ECU/A00 105 03 2 Engine Manifold Air Temperature Sensor voltage is out of range high. The device or wiring is faulty. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 105 04 2 Engine Manifold Air Temperature Sensor voltage is out of range low. The device or wiring is faulty. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 105 15 2 Manifold air temperature high - least severe level. (6.8 L, 9.0 L)
ECU/A00 105 16 2 Engine manifold air temperature above 88°C / 190°F (moderately severe level). Maximum power level is derated. Power boost is disabled. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 107 00 2 Air Filter Restricted Switch indicates a plugged air filter. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 108 02 2 Barometric pressure invalid. (6.8 L, 9.0 L)
ECU/A00 110 00 1 Engine coolant temperature above 115°C / 240°F (most severe level). Maximum power level is derated. Power boost is disabled. (8.1 L)
ECU/A00 110 00 1 Engine coolant temperature above 113°C / 235°F (most severe level). Maximum power level is derated. Power boost is disabled. (6.8 L, 9.0 L, 12.5 L)
ECU/A00 110 03 2 Engine Coolant Temperature Sensor voltage is out of range high. The device or wiring is faulty. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 110 04 2 Engine Coolant Temperature Sensor voltage is out of range low. The device or wiring is faulty. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 110 15 2 Coolant temperature high - least severe level. (6.8 L, 9.0 L)
ECU/A00 110 16 2 Engine coolant temperature above 110°C / 230°F. Maximum power level is derated. Power boost is disabled. (8.1 L)
ECU/A00 110 16 2 Engine coolant temperature above 108°C / 226°F. Maximum power level is derated. Power boost is disabled. (6.8 L, 9.0 L, 12.5 L)
ECU/A00 110 17 2 Coolant temperature low - least severe level. (6.8 L, 9.0 L)
ECU/A00 111 01 1 Coolant level low. Engine coolant temperature above 125°C / 257°F. Maximum power level is derated. Power boost is disabled. (8.1 L)
ECU/A00 157 03 1 Rail Pressure Sensor voltage is out of range high. (6.8 L, 9.0 L)
ECU/A00 157 04 1 Rail Pressure Sensor voltage is out of range low. (6.8 L, 9.0 L)
ECU/A00 157 10 2 When engine is motoring and high pressure fuel pump is off, rail pressure decays too fast. (6.8 L, 9.0 L)
ECU/A00 157 17 2 During start, the engine is not able to develop starting rail pressure setpoint. (6.8 L, 9.0 L)
ECU/A00 158 17 2 Controller not powered down properly. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 174 00 1 Fuel temperature high - most severe level. (6.8 L, 9.0 L)
ECU/A00 174 03 2 Engine Fuel Temperature Sensor voltage is out of range high. The device or wiring is faulty. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 174 04 2 Engine Fuel Temperature Sensor voltage is out of range low. The device or wiring is faulty. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 174 16 2 Engine fuel temperature above normal range. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 189 00 1 A condition exists that causes the engine to derate. (6.8 L, 9.0 L)
ECU/A00 412 00 1 Exhaust Gas Recirculation temperature high - most severe level. (6.8 L, 9.0 L)
ECU/A00 412 03 2 Exhaust Gas Recirculation Temperature out of range high. (6.8 L, 9.0 L)
ECU/A00 412 04 2 Exhaust Gas Recirculation Temperature out of range low. (6.8 L, 9.0 L)

 

OUO6075,00003DE -19-21JUN06-2/6


Control Unit SPN FMI Pri. Description
ECU/A00 412 16 2 Exhaust Gas Recirculation temperature high - moderately severe level. (6.8 L, 9.0 L)
ECU/A00 611 03 1 The injector driver has detected a short to battery in the injector wiring. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 611 03 2 The injector driver has detected a short to battery in the injector wiring. (12.5 L)
ECU/A00 611 04 1 The injector driver has detected a short to ground in the injector wiring. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 611 04 2 The injector driver has detected a short to ground in the injector wiring. (12.5 L)
ECU/A00 620 03 2 Engine Control Unit internal 5 Volts DC Supply out of range or incorrect high. (12.5 L)
ECU/A00 620 04 2 Engine Control Unit internal 5 Volts DC Supply out of range or incorrect low. (12.5 L)
ECU/A00 627 01 2 All injector currents are out of specification. The injector pull-in current is too low or the injector hold-in current is incorrect. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 627 18 2 Battery voltage below normal - moderately severe level. (6.8 L, 9.0 L)
ECU/A00 629 13 1 Controller cannot exit boot block program. Disconnect effected control unit connectors. Wait 30 seconds. Reconnect connectors. Reprogram controller with latest software. Replace control unit if condition persists.
ECU/A00 636 02 2 Electrical noise detected on Pump Position Sensor (camshaft) + (cc# 172) and/or Pump Position Sensor - (cc# 173). (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 636 05 2 Pump Position Sensor (camshaft) current below normal or open circuit. (6.8 L, 9.0 L)
ECU/A00 636 06 2 Pump Position Sensor (camshaft) current above normal or shorted to ground. (6.8 L, 9.0 L)
ECU/A00 636 08 2 Pump Position Sensor (camshaft) signal is missing. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 636 10 2 Pump Position Sensor (camshaft) signal has incorrect pulse pattern. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 637 02 2 Electrical noise detected on Engine Speed Sensor (crankshaft) + (cc# 174) and/or Engine Speed Sensor - (cc# 175). (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 637 05 2 Engine Speed Sensor (crankshaft) current below normal or open circuit. (6.8 L, 9.0 L)
ECU/A00 637 06 2 Engine Speed Sensor (crankshaft) current above normal or shorted to ground. (6.8 L, 9.0 L)
ECU/A00 637 07 2 Position relationship between Engine Speed Sensor (crankshaft) and Pump Position Sensor (camshaft) not correct. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 637 08 2 Engine Speed Sensor (crankshaft) signal is missing. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 637 10 2 Engine Speed Sensor (crankshaft) signal has incorrect pulse pattern. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 641 04 2 Variable Geometry Turbocharger Actuator disabled. (6.8 L, 9.0 L)
ECU/A00 641 05 2 Variable Geometry Turbocharger Actuator current below normal or open circuit. (6.8 L, 9.0 L)
ECU/A00 641 12 2 Variable Geometry Turbocharger Actuator not communicating with engine control unit. (6.8 L, 9.0 L)
ECU/A00 641 13 2 Variable Geometry Turbocharger Actuator learn error. (6.8 L, 9.0 L)
ECU/A00 641 16 2 Variable Geometry Turbocharger Actuator temperature high - moderately severe level. (6.8 L, 9.0 L)
ECU/A00 651 02 2 The injector part number entered into the engine control unit is not valid. (6.8 L, 9.0 L)
ECU/A00 651 05 2 The current to Injector #1 is less than expected. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 651 06 2 The current to Injector #1 increases too rapidly. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 651 07 2 The fuel flow to cylinder #1 is lower than expected. (6.8 L, 8.1 L, 9.0 L)

 

OUO6075,00003DE -19-21JUN06-3/6


Control Unit SPN FMI Pri. Description
ECU/A00 651 13 2 The injector part number is correct, but the injector data is not as expected. (6.8 L, 9.0 L)
ECU/A00 652 02 2 The injector part number entered into the engine control unit is not valid. (6.8 L, 9.0 L)
ECU/A00 652 05 2 The current to Injector #2 is less than expected. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 652 06 2 The current to Injector #2 increases too rapidly. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 652 07 2 The fuel flow to cylinder #2 is lower than expected. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 652 13 2 The injector part number is correct, but the injector data is not as expected. (6.8 L, 9.0 L)
ECU/A00 653 02 2 The injector part number entered into the engine control unit is not valid. (6.8 L, 9.0 L)
ECU/A00 653 05 2 The current to Injector #3 is less than expected. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 653 06 2 The current to Injector #3 increases too rapidly. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 653 07 2 The fuel flow to cylinder #3 is lower than expected. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 653 13 2 The injector part number is correct, but the injector data is not as expected. (6.8 L, 9.0 L)
ECU/A00 654 02 2 The injector part number entered into the engine control unit is not valid. (6.8 L, 9.0 L)
ECU/A00 654 05 2 The current to Injector #4 is less than expected. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 654 06 2 The current to Injector #4 increases too rapidly. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 654 07 2 The fuel flow to cylinder #4 is lower than expected. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 654 13 2 The injector part number is correct, but the injector data is not as expected. (6.8 L, 9.0 L)
ECU/A00 655 02 2 The injector part number entered into the engine control unit is not valid. (6.8 L, 9.0 L)
ECU/A00 655 05 2 The current to Injector #5 is less than expected. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 655 06 2 The current to Injector #5 increases too rapidly. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 655 07 2 The fuel flow to cylinder #5 is lower than expected. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 655 13 2 The injector part number is correct, but the injector data is not as expected. (6.8 L, 9.0 L)
ECU/A00 656 02 2 The injector part number entered into the engine control unit is not valid. (6.8 L, 9.0 L)
ECU/A00 656 05 2 The current to Injector #6 is less than expected. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 656 06 2 The current to Injector #6 increases too rapidly. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 656 07 2 The fuel flow to cylinder #6 is lower than expected. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 656 13 2 The injector part number is correct, but the injector data is not as expected. (6.8 L, 9.0 L )
ECU/A00 676 03 2 Glow Plug Relay Output (cc# 5413) is high when Engine Control Unit is not energizing the Glow Plug Relay. (6.8 L)
ECU/A00 676 04 2 Glow Plug Relay Output (cc# 5429) is low when Engine Control Unit is energizing the Glow Plug Relay. (6.8 L)
ECU/A00 1075 05 2 Electric fuel pump current below normal or open circuit. (6.8 L, 9.0 L)
ECU/A00 1075 06 2 Electric fuel pump current above normal or short circuit. (6.8 L, 9.0 L)
ECU/A00 1075 12 2 Internal failure of electric fuel pump. (6.8 L, 9.0 L)
ECU/A00 1080 03 1 Rail Pressure Sensor Power (cc# 721) voltage too high. (8.1 L)
ECU/A00 1080 04 1 Rail Pressure Sensor Power (cc# 721) voltage too low. (8.1 L)
ECU/A00 1136 00 1 Engine control unit temperature high - most severe level. (6.8 L, 9.0 L)
ECU/A00 1136 16 2 Engine control unit temperature high - moderately severe level. (6.8 L, 9.0 L)
ECU/A00 1172 03 2 Compressor Inlet Temperature (cc# 5516) out of range high. (6.8 L, 9.0 L)
ECU/A00 1172 04 2 Compressor Inlet Temperature (cc# 5516) out of range low. (6.8 L, 9.0 L)
ECU/A00 1180 00 1 Turbine inlet temperature high - most severe level. This is a calculated value. (6.8 L, 9.0 L)

 

OUO6075,00003DE -19-21JUN06-4/6


Control Unit SPN FMI Pri. Description
ECU/A00 1180 16 2 Turbine inlet temperature high - moderately severe level. This is a calculated value. (6.8 L, 9.0 L)
ECU/A00 1209 02 2 Exhaust pressure invalid. Model computation does not agree with sensor reading. (6.8 L, 9.0 L)
ECU/A00 1209 03 2 Exhaust Pressure (cc# 5465) out of range high. (6.8 L, 9.0 L)
ECU/A00 1209 04 2 Exhaust Pressure (cc# 5465) out of range low. (6.8 L, 9.0 L)
ECU/A00 1347 03 1 Pump control valve is forced closed by a short to voltage source. (6.8 L, 9.0 L)
ECU/A00 1347 05 1 Driver detects problem in circuit to Pump Solenoid High (cc# 176). (6.8 L, 9.0 L)
ECU/A00 1347 05 2 Driver detects problem in circuit to Pump Solenoid High (cc# 176). (8.1 L)
ECU/A00 1347 07 2 Rail Pressure Control is unable to match required rail pressure. It may be too high or too low. (6.8 L, 8.1 L, 9.0 L)
ECU/A00 1347 10 2 Pump Solenoid 1 is not delivering expected fuel flow. (8.1 L)
ECU/A00 1348 05 2 Driver detects problem in circuit to Pump Solenoid Low 2 (cc# 179). (8.1 L)
ECU/A00 1348 10 2 Pump Solenoid 2 is not delivering expected fuel flow. (8.1 L)
ECU/A00 1569 31 2 Engine protection - power derated due to other faults. This code occurs in conjunction with 105.16, 110.00, 110.03, 110.04, and 110.16. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 2000 13 1 Engine Control Unit security violation. (6.8 L, 8.1 L, 9.0 L, 12.5 L)
ECU/A00 2630 00 1 Aftercooler outlet temperature high - most severe level. (6.8 L, 9.0 L)
ECU/A00 2630 03 2 Aftercooler Outlet Temperature (cc# 5455) out of range high. (6.8 L, 9.0 L)
ECU/A00 2630 04 2 Aftercooler Outlet Temperature (cc# 5455) out of range low. (6.8 L, 9.0 L)
ECU/A00 2630 15 2 Aftercooler outlet temperature high - least severe level. (6.8 L, 9.0 L)
ECU/A00 2630 16 2 Aftercooler outlet temperature high - moderately severe level. (6.8 L, 9.0 L)
ECU/A00 2659 02 2 Exhaust Gas Recirculation flow/temperature mismatch. (6.8 L, 9.0 L)
ECU/A00 2659 15 2 Exhaust Gas Recirculation flow higher than expected - least severe level. (6.8 L, 9.0 L)
ECU/A00 2659 17 2 Exhaust Gas Recirculation flow lower than expected - least severe level. (6.8 L, 9.0 L)
ECU/A00 2790 16 2 Compressor outlet temperature high - most severe level. This is a calculated value. (6.8 L, 9.0 L)
ECU/A00 2791 02 2 Exhaust Gas Recirculation valve sensor voltage mismatch. Unable to achieve desired EGR valve position. (6.8 L, 9.0 L)
ECU/A00 2791 03 2 Exhaust Gas Recirculation Position 1 (cc# 5425) voltage out of range high. (6.8 L, 9.0 L)
ECU/A00 2791 04 2 Exhaust Gas Recirculation Position 1 (cc# 5425) voltage out of range low. (6.8 L, 9.0 L)
ECU/A00 2791 05 2 Exhaust Gas Recirculation Position Sensor current below normal or open circuit. (6.8 L, 9.0 L)
ECU/A00 2791 06 2 Exhaust Gas Recirculation Position Sensor current above normal or shorted to ground. (6.8 L, 9.0 L)
ECU/A00 2791 07 2 Exhaust Gas Recirculation valve not responding or out of adjustment. (6.8 L, 9.0 L)
ECU/A00 2791 13 2 Exhaust Gas Recirculation valve out of calibration. (6.8 L, 9.0 L)
ECU/A00 2791 14 1 Exhaust Gas Recirculation actuator turned off due to learn cycle error with no valid learn limits stored in engine control unit. (6.8 L, 9.0 L)
ECU/A00 2791 31 2 Exhaust Gas Recirculation valve position error. (6.8 L, 9.0 L)
ECU/A00 2795 07 2 Variable Geometry Turbocharger Actuator not responding or out of adjustment, vane position and desired vane position mismatch

 

OUO6075,00003DE -19-21JUN06-5/6


Control Unit SPN FMI Pri. Description
ECU/A00 2795 12 2 Variable Geometry Turbocharger Actuator internal fault.
ECU/A00 3509 03 1 Sensor supply 1 voltage (cc# 5946) out of range high. (6.8 L, 9.0 L)
ECU/A00 3509 04 1 Sensor supply 1 voltage (cc# 5946) out of range low. (6.8 L, 9.0 L)
ECU/A00 3510 03 2 Sensor supply 2 voltage (cc# 5416) out of range high. (6.8 L, 9.0 L)
ECU/A00 3510 04 2 Sensor supply 2 voltage (cc# 5416) out of range low. (6.8 L, 9.0 L)
ECU/A00 3511 03 2 Sensor supply 3 voltage (cc# 5616) out of range high. (6.8 L, 9.0 L)
ECU/A00 3511 04 2 Sensor supply 3 voltage (cc# 5616) out of range low. (6.8 L, 9.0 L)
ECU/A00 3512 03 2 Sensor supply 4 voltage (unused) out of range high. (6.8 L, 9.0 L)
ECU/A00 3512 04 2 Sensor supply 4 voltage (unused) out of range low. (6.8 L, 9.0 L)
ECU/A00 3513 03 2 Sensor supply 5 voltage (cc# 5511) out of range high. (6.8 L, 9.0 L)
ECU/A00 3513 04 2 Sensor supply 5 voltage (cc# 5511) out of range low. (6.8 L, 9.0 L)

 

OUO6075,00003DE -19-21JUN06-6/6