Fault code No. 11. Normal signals are not received from the cylinder identification sensor (Yamaha YZF-R1, 7 generation, 2009-2014) [Engine and systems: Fuel injection]

This section describes the measures per fault code number displayed on the meter. Check and service the items or components that are the probable cause of the malfunction following the order given.

After the check and service of the malfunctioning part has been completed, reset the meter display according to the reinstatement method.

Fault code No.:

Code number displayed on the meter when the engine failed to work normally.

Diagnostic code No.:

Diagnostic code number to be used when the diagnostic mode is operated. Refer to "Diagnostic mode".

Fault code No.	11
Symptom	Normal signals are not received from the cylinder identification sensor.
Fail-safe action	Engine startup: Impossible
Fail-safe action	Riding: Possible
Diagnostic monitoring code No.
Meter display
Checking method

	Item/components and probable cause	Check or maintenance job	Sensor inspection procedure
1	Connection of cylinder identification sensor coupler. Check the connection of the coupler is secure. Remove the coupler, and check each pin (for bending, wear, or locking).	Poor connection → Connect it securely, or repair/replace the wire harness.	Crank the engine, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step.
2	Connection of main harness ECU couplerю Check the connection of the coupler is secure. Remove the coupler, and check each pin (for bending, wear, or locking).	Poor connection → Connect it securely, or repair/replace the wire harness.	Crank the engine, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step.
3	Continuity of wire harness	Open or short circuit → Replace the wire harness. White/Black-White/Black Black/Blue-Black/Blue Blue-Blue	Crank the engine, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step.
4	Sensor installation status Check the mounting section for loose or pinched mounting.	Incorrect installation → Reinstall or repair the sensor.	Crank the engine, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step.
5	Cylinder identification sensor malfunction	Sensor inspection procedure Refer to "Checking the cylinder identification sensor".	Crank the engine, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step.
6	ECU malfunction	Replace the ECU.

Fault code No. 11. Normal signals are not received from the cylinder identification sensor (Yamaha YZF-R1 Y(C))