Diagnostic Reference Engine68 Verified Codes
Motorcycle Diagnostic Fault Code & DTC Decoder
Official OEM service manual fault code definitions, multimeter bench test specifications, pinout resistance ranges, and symptom troubleshooting for modern motorcycles.
Standards
5 Brands
Bench Specs
Ohms & Pinouts
System:
Showing 68 codes
12YamahaCrankshaft Position Sensor (CKP)Crankshaft & Ignition Timing
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Official Fault Description
No normal signals are received from the crankshaft position sensor during cranking or engine running.
Rider & Workshop Symptoms
Engine will not start; starter cranks but no fuel injection pulse or spark delivery occurs. Warning light flashes.
Multimeter Bench Test & Pinout Specifications
Disconnect stator 2-pin gray/black connector. Measure pickup coil resistance across Blue and Green/White terminals. Standard specification: 248 – 372 Ω at 20°C (68°F). If resistance is infinite (open) or zero (shorted), replace pickup coil stator assembly.
Probable Root Causes
- Defective crankshaft position sensor
- Open or short circuit in wiring sub-harness
- Reluctor wheel tooth mechanical damage
- Loose connector pin tension
Recommended Service Action
Inspect wiring harness continuity to ECU pin 12. Replace stator pickup coil if resistance is outside 248–372 Ω.
13YamahaIntake Air Pressure Sensor (IAPS - Cylinder #1 / Cyl #2)Air Intake & Fuel Metering
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14YamahaIntake Air Pressure Sensor Hose / Vacuum Line MalfunctionAir Intake & Fuel Metering
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15YamahaThrottle Position Sensor (TPS)Throttle Actuation & Fuel Metering
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16YamahaThrottle Position Sensor Stuck / Mechanical SeizureThrottle Actuation & Fuel Metering
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19YamahaSidestand Switch Circuit / ECU Input OpenSafety & Interlock Circuit
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21YamahaCoolant Temperature Sensor (ECT)Engine Cooling & Fuel Enrichment
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22YamahaIntake Air Temperature Sensor (IATS)Air Intake & Fuel Metering
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30YamahaLean Angle Sensor (Tip-Over Latch)Safety & Interlock Circuit
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33YamahaIgnition Coil #1 (Cylinder 1 Primary Malfunction)Ignition System
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41YamahaLean Angle Sensor Circuit Open / ShortedSafety & Interlock Circuit
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46YamahaVehicle Power Supply Anomaly (Charging System Monitor)Charging & Battery System
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50YamahaECU Internal Memory / Processor FaultEngine Control Module
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C12SuzukiCrankshaft Position Sensor (CKP)Crankshaft & Ignition Timing
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C14SuzukiThrottle Position Sensor (TPS)Throttle Actuation & Fuel Metering
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C15SuzukiEngine Coolant Temperature Sensor (ECT)Engine Cooling & Fuel Enrichment
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C21SuzukiIntake Air Temperature Sensor (IAT)Air Intake & Fuel Metering
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C23SuzukiTip-Over Sensor (TOS)Safety & Interlock Circuit
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C28SuzukiSecondary Throttle Valve Actuator (STVA)Throttle Actuation & Fuel Metering
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C29SuzukiSecondary Throttle Position Sensor (STPS)Throttle Actuation & Fuel Metering
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C31SuzukiGear Position Sensor (GPS)Drivetrain & Ignition Timing
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C41SuzukiFuel Pump Control System / Fuel Pump RelayFuel Delivery System
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C46SuzukiExhaust Control Valve Actuator (EXCVA / SET Valve)Exhaust & Emissions Control
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11KawasakiMain Throttle Sensor (TPS)Throttle Actuation & Fuel Metering
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12KawasakiInlet Air Pressure Sensor (IAPS)Air Intake & Fuel Metering
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14KawasakiWater Temperature Sensor (Coolant Temp)Engine Cooling & Fuel Enrichment
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21KawasakiCrankshaft Sensor (CKP)Crankshaft & Ignition Timing
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31KawasakiVehicle-Down Sensor (Bank Angle Sensor)Safety & Interlock Circuit
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51KawasakiStick Coil #1 MalfunctionIgnition System
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62KawasakiSub-Throttle Valve Actuator (STVA)Throttle Actuation & Fuel Metering
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1 BlinkHondaManifold Absolute Pressure Sensor (MAP Sensor)Air Intake & Fuel Metering
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7 BlinksHondaEngine Coolant Temperature Sensor (ECT)Engine Cooling & Fuel Enrichment
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8 BlinksHondaThrottle Position Sensor (TP Sensor)Throttle Actuation & Fuel Metering
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9 BlinksHondaIntake Air Temperature Sensor (IAT Sensor)Air Intake & Fuel Metering
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19 BlinksHondaCrankshaft Position Sensor (CKP Sensor)Crankshaft & Ignition Timing
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21 BlinksHondaOxygen Sensor (O2 Sensor)Exhaust & Emissions Control
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54 BlinksHondaBank Angle Sensor (BAS / Tip-Over Sensor)Safety & Interlock Circuit
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P0105Universal OBD2Manifold Absolute Pressure (MAP) Sensor Circuit MalfunctionAir Intake & Fuel Metering
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P0115Universal OBD2Engine Coolant Temperature (ECT) Circuit MalfunctionEngine Cooling & Fuel Enrichment
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P0120Universal OBD2Throttle Position Sensor (TPS) Circuit MalfunctionThrottle Actuation & Fuel Metering
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P0130Universal OBD2O2 Sensor Circuit Malfunction (Bank 1, Sensor 1)Exhaust & Emissions Control
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P0201Universal OBD2Fuel Injector #1 Circuit Open / ShortFuel Delivery System
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P0300Universal OBD2Random / Multiple Cylinder Misfire DetectedIgnition & Combustion
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P0335Universal OBD2Crankshaft Position Sensor 'A' Circuit MalfunctionCrankshaft & Ignition Timing
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P0351Universal OBD2Ignition Coil #1 Primary / Secondary Circuit MalfunctionIgnition System
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P0500Universal OBD2Vehicle Speed Sensor (VSS) MalfunctionChassis & Speed Monitoring
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P0505Universal OBD2Idle Air Control System (IACV / ISC) MalfunctionAir Intake & Idle Control
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24YamahaO2 Sensor (Oxygen Sensor)Exhaust & Emissions Control
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34YamahaIgnition Coil #2 (Cylinder 2 Primary Malfunction)Ignition System
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42YamahaSpeed Sensor / Neutral Switch DiscrepancySpeed & Interlock Circuit
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43YamahaFuel System Voltage Monitor (Fuel Pump Power Supply)Fuel Delivery System
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C24SuzukiIgnition Signal #1 (Ignition Coil #1)Ignition System
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C32SuzukiPrimary Fuel Injector #1 MalfunctionFuel Delivery System
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C42SuzukiIgnition Switch Circuit / Anti-Theft ResistorAnti-Theft & Ignition Circuit
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C44SuzukiHeated Oxygen Sensor (HO2S)Exhaust & Emissions Control
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24KawasakiSpeed Sensor MalfunctionChassis & Speed Monitoring
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25KawasakiGear Position Sensor MalfunctionDrivetrain & Ignition Timing
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34KawasakiExhaust Butterfly Valve ActuatorExhaust & Emissions Control
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2 BlinksHondaMAP Sensor Vacuum Hose Detached / LeakingAir Intake & Fuel Metering
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11 BlinksHondaVehicle Speed Sensor (VSS)Chassis & Speed Monitoring
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12 BlinksHondaPrimary Fuel Injector #1 CircuitFuel Delivery System
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29 BlinksHondaIdle Air Control Valve (IACV)Air Intake & Idle Control
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33 BlinksHondaECM EEPROM Internal Memory MalfunctionEngine Control Module
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P0110Universal OBD2Intake Air Temperature (IAT) Circuit MalfunctionAir Intake & Fuel Metering
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P0135Universal OBD2O2 Sensor Heater Circuit (Bank 1, Sensor 1)Exhaust & Emissions Control
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P0301Universal OBD2Cylinder 1 Misfire DetectedIgnition & Combustion
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P0340Universal OBD2Camshaft Position Sensor (CMP) Circuit MalfunctionCrankshaft & Ignition Timing
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P0443Universal OBD2Evaporative Emission (EVAP) Purge Valve CircuitExhaust & Emissions Control
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