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Yale fault codes & repair guides

All 129 codes· 50 per page · page 1 of 3

Yale fault codes with controller, issue summary and a link to the full repair manual
CodeControllerIssue summaryRepair manual
51-2Controller / ECU (Engine Control Unit) or VSM (Vehicle System Manager)Throttle Position Sensor Signals A and B Not Tracking CorrectlyFull repair manual for code 51-2, Controller / ECU (Engine Control Unit) or VSM (Vehicle System Manager)
51-31Vehicle Controller / Engine Control Unit (ECU)Throttle Position Sensor 1 & 2 Out of RangeFull repair manual for code 51-31, Vehicle Controller / Engine Control Unit (ECU)
51-7Engine Control Unit (ECU) or Vehicle System Manager (VSM)Throttle Position Sensor Signals A and B Not At Commanded ValueFull repair manual for code 51-7, Engine Control Unit (ECU) or Vehicle System Manager (VSM)
91-2Controller / Display System Controller (DSC) or Engine ECUAccelerator Pedal Position Sensor Signals A and B Not Tracking CorrectlyFull repair manual for code 91-2, Controller / Display System Controller (DSC) or Engine ECU
94-0Engine Control Unit (ECU)Primary Fuel Pressure Higher Than ExpectedFull repair manual for code 94-0, Engine Control Unit (ECU)
94-1Engine Control Module (ECM) / Vehicle System Manager (VSM)Primary Fuel Pressure Lower Than ExpectedFull repair manual for code 94-1, Engine Control Module (ECM) / Vehicle System Manager (VSM)
96-3Controller (Vehicle System Manager / VSM)Fuel Level Sensor / LPG Switch OORH (Out of Range High)Full repair manual for code 96-3, Controller (Vehicle System Manager / VSM)
96-4VSM (Vehicle System Manager)Fuel Level Sensor / LPG Switch OORL (Out of Range Low)Full repair manual for code 96-4, VSM (Vehicle System Manager)
100-4Engine Control Module (ECM)Engine Oil Pressure OORLFull repair manual for code 100-4, Engine Control Module (ECM)
105-3Engine ECUIntake Air Temperature (IAT) Sensor OORH (Out of Range High)Full repair manual for code 105-3, Engine ECU
105-4Engine Control Unit (ECU)Intake Air Temperature (IAT) Sensor OORLFull repair manual for code 105-4, Engine Control Unit (ECU)
108-1Engine Control Unit (ECU)Barometric Pressure Below Acceptable LimitFull repair manual for code 108-1, Engine Control Unit (ECU)
110-3Engine Control Unit (ECU) / Engine ControllerCoolant Temperature Sensor OORHFull repair manual for code 110-3, Engine Control Unit (ECU) / Engine Controller
110-4Engine Control Module (ECM) / Engine/Fuel ECUCoolant Temperature Sensor OORLFull repair manual for code 110-4, Engine Control Module (ECM) / Engine/Fuel ECU
135-16Engine Control Module (ECM) or Vehicle System Manager (VSM)Fuel Air Pressure minus (MAP) OORH (GM LPG Only) / Fuel Absolute Pressure Minus (MAP) Too HighFull repair manual for code 135-16, Engine Control Module (ECM) or Vehicle System Manager (VSM)
168-0Controller / ECUSystem Battery Voltage OORHFull repair manual for code 168-0, Controller / ECU
168-1VSM (Vehicle System Manager) or ECU (Engine Control Unit)System Battery Voltage OORLFull repair manual for code 168-1, VSM (Vehicle System Manager) or ECU (Engine Control Unit)
168-4VSM / ECUSystem Battery Voltage OORLFull repair manual for code 168-4, VSM / ECU
177-3Transmission Control Unit (TCU) / Transmission ECMTransmission Oil Temperature Sensor OORH (Out Of Range High)Full repair manual for code 177-3, Transmission Control Unit (TCU) / Transmission ECM
177-4TCU (Transmission Control Unit) or VSM (Vehicle System Manager)Transmission Oil Temperature Sensor OORL (Out Of Range Low)Full repair manual for code 177-4, TCU (Transmission Control Unit) or VSM (Vehicle System Manager)
190-2Engine ECU or VSMEngine RPM Sensor Output Is Less Than Engine SpeedFull repair manual for code 190-2, Engine ECU or VSM
190-2Engine ECU or VSMCrank Loss (CAM Pulse without Crank Pulse)Full repair manual for code 190-2, Engine ECU or VSM
190-4Engine Control Unit (ECU) or Vehicle System Manager (VSM)Crank Loss (CAM Pulse without Crank Pulse)Full repair manual for code 190-4, Engine Control Unit (ECU) or Vehicle System Manager (VSM)
190-7Vehicle System Manager (VSM) or Engine Control Module (ECM)Engine Speed Exceeds CommandFull repair manual for code 190-7, Vehicle System Manager (VSM) or Engine Control Module (ECM)
190-8Engine Control Module (ECM) / Engine ECUCrank/CAM SynchronizationFull repair manual for code 190-8, Engine Control Module (ECM) / Engine ECU
515-0Engine Control Unit (ECU)RPM Greater Than Throttle CommandFull repair manual for code 515-0, Engine Control Unit (ECU)
521-3Vehicle System Controller (VSC)Brake Pedal Position Sensor OORHFull repair manual for code 521-3, Vehicle System Controller (VSC)
521-4Controller / VSM (Vehicle System Manager)Brake Pedal Position Sensor OORL (Out Of Range Low)Full repair manual for code 521-4, Controller / VSM (Vehicle System Manager)
651-5Engine Control Module (ECM)GM Gas Drive Injector 1 Open Circuit, or Cummins-Code 322. See QSB 3.3L Troubleshooting and RepairFull repair manual for code 651-5, Engine Control Module (ECM)
652-5Engine Control Module (ECM) / Powertrain Control Module (PCM)GM Gas Drive Injector 2 Open CircuitFull repair manual for code 652-5, Engine Control Module (ECM) / Powertrain Control Module (PCM)
653-5Engine Control Module (ECM)Injector Solenoid Driver Cylinder 3 Circuit - Current Below Normal, or Open CircuitFull repair manual for code 653-5, Engine Control Module (ECM)
654-5Engine Control Module (ECM) / Engine ControllerInjector Solenoid Driver Cylinder 4 Circuit - Current Below Normal or Open CircuitFull repair manual for code 654-5, Engine Control Module (ECM) / Engine Controller
655-5Engine Control Unit (ECU)GM Gas Drive Injector 5 Open CircuitFull repair manual for code 655-5, Engine Control Unit (ECU)
656-5Engine Control Unit (ECU) / Vehicle System ControllerGM Gas Drive Injector 6 Open CircuitFull repair manual for code 656-5, Engine Control Unit (ECU) / Vehicle System Controller
676-3VSM (Vehicle System Manager)Glow Plug Relay Driver Output OORH (Out Of Range High)Full repair manual for code 676-3, VSM (Vehicle System Manager)
880-4VSM (Vehicle System Manager)Stop Lamp Driver Output OORL (Out Of Range Low)Full repair manual for code 880-4, VSM (Vehicle System Manager)
1079-31Vehicle System Manager (VSM) or Engine Control Module (ECM) / Main Controller5VE1 & 5VE2 Simultaneously OORHFull repair manual for code 1079-31, Vehicle System Manager (VSM) or Engine Control Module (ECM) / Main Controller
1239-7Engine Control Module (ECM) / ControllerFuel Run-Out Longer Than ExpectedFull repair manual for code 1239-7, Engine Control Module (ECM) / Controller
2000-12VSM (Vehicle System Manager) or Engine ECUCAN Tx FailureFull repair manual for code 2000-12, VSM (Vehicle System Manager) or Engine ECU
2000-14Vehicle System Manager (VSM) or Display/Instrument ClusterCANbus Address Conflict FailureFull repair manual for code 2000-14, Vehicle System Manager (VSM) or Display/Instrument Cluster
2023-12Instrument Panel Display / Vehicle System Manager (VSM)CANbus Error With DisplayFull repair manual for code 2023-12, Instrument Panel Display / Vehicle System Manager (VSM)
2350-3Vehicle System Manager (VSM) / Main ControllerFront Work Lights Relay (RL4) Driver Output OORH (Out Of Range High)Full repair manual for code 2350-3, Vehicle System Manager (VSM) / Main Controller
520260-3Engine Control Module (ECM) / Engine ECUElectronic Pressure Regulator (EPR) OORH (Out of Range High)Full repair manual for code 520260-3, Engine Control Module (ECM) / Engine ECU
520260-4Engine Control Module (ECM)Electronic Pressure Regulator (EPR) OORL (Out of Range Low)Full repair manual for code 520260-4, Engine Control Module (ECM)
522120-1VSM or TCUEngine RPM Higher than XMSN LimitFull repair manual for code 522120-1, VSM or TCU
522125-8TCUTransmission Range1 Valve Current Out Of Range (TCU)Full repair manual for code 522125-8, TCU
522585-2Mazda Gas ECUEngine RPM Sensor (Mazda Gas ECU)Full repair manual for code 522585-2, Mazda Gas ECU
522592-0Engine ECU / ControllerEPR Pressure Greater Than CommandedFull repair manual for code 522592-0, Engine ECU / Controller
522592-1Engine Control Unit (ECU)EPR Pressure Less Than CommandedFull repair manual for code 522592-1, Engine Control Unit (ECU)
522593-12Engine Control Unit (ECU)CANbus Communication Loss - ECU to EPRFull repair manual for code 522593-12, Engine Control Unit (ECU)