Yamaha YBR 125 workshop manual
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Fault codes can be read on the dashboard but
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Fault codes are stored on the ECU , these will be shown via the engine fault light on the dash board
as a series of flashes of the light .
The engine management light will come on for 3 secs every time you start the bike , if the light does not come on replace the bulb at rear of clocks .
Codes are all 2 digit numbers , the first number will be read by long flashes of the light , the second
number of the code with be in short flashes of the light .
Fault code 12 - Crankshaft position sensor
Fault code 13 - Intake air pressure sensor
Fault code 14 - Intake air pressure sensor
Fault code 15 - Throttle position sensor
Fault code 16 - TPS
Fault code 19 - No signal from ignition to ecu
Fault code 22 - Intake air temp sensor
Fault code 28 - Engine temp sensor
Fault code 30 - Tip over sensor
Fault code 33 - Igniton coil
Fault code 39 - Fuel injector
Fault code 41 - Tip over sensor
Fault code 44 - Read write error ECU
Fault code 46 - Power supply error to FI system
Fault code 50 - Ecu malfunction
Fault code 51 - Diagnosis cooling fan motor relay
Fault code 52 - relay diagnostics lamp head light
Yamaha YBR 125 how to read a fault code
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