Yamaha MX825 - Page 128

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ELECTRICAL
FUEL INJECTION SYSTEM
Error Code No. P0032, P0031
Error Code P0032
System or Component Oxygen Sensor Heater
Detail of Error Heater Circuit High Voltage
Engine Symptoms Deteriorated exhaust (until exhaust gas heated after engine starts)
Engine Running availability Able to run engine
DIAG Tool Code —
Diagnosing —
Probable Cause
• Malfunction in wire harness and coupler between sensor and ECU
• High voltage in wire harness between sensor and ECU
• Malfunction in sensor (heater) unit
• Malfunction in ECU
Error Code P0031
System or Component Oxygen Sensor Heater
Detail of Error Heater Circuit Low Voltage
Engine Symptoms Deteriorated exhaust (until exhaust gas heated after engine starts)
Engine Running availability Able to run engine
DIAG Tool Code —
Diagnosing —
Probable Cause
• Malfunction in wire harness and coupler between sensor and ECU
• Low voltage in wire harness between sensor and ECU
• Malfunction in sensor (heater) unit
• Malfunction in ECU