The MIL (Malfunction Indicator Lamp) code on a Honda motorbike can be a scourge for motorbike owners.
Not only because the appearance of the lamp is quite striking, but also because the MIL code can be an indicator of damage to the system in the motorbike.
However, even though the MIL code can provide important information about the condition of the motorbike, many Honda motorbike owners are still confused about the meaning and consequences of the MIL code.
Therefore, in this article we will discuss in detail about the MIL code on Honda motorbikes, what it means, and the consequences that can occur if the MIL code is not handled properly.
For Honda injection motorbike users who are still unfamiliar, maybe they don’t really know what the function of the MIL is.
The function of the MIL is as an indicator light that functions to notify if there is damage to the motor injection system.
The MIL lamp is usually embedded in the orange part of the speedometer. If there is no damage, then the MIL is off and the motor can be started.
This indicates that the injection system and sensors are still active or in normal circumstances. However, if there is any damage, the MIL will light up and keep flashing.
The MIL lamp will light up and flash continuously as long as the injection system has not been repaired. There are short and long blinks on the MIL.
Long MIL flashes are usually 1.3 seconds long, while short MIL flashes are shorter, 0.3 seconds.
Please note, before being taken to the workshop, the user should first find out what is damaged from the injection system of his Honda motorbike.
The workshop mechanic will only have to check again and repair the damage.
If it turns out that only the sensor cable is dislodged, then just install it again, then reset the ECU to normalize the system.
The Meaning of the Honda Motor MIL Code and the Consequences
There are 11 Honda MIL codes that every motorbike user needs to know. The following is a detailed explanation.
Kedip 1 Kali – Sensor MAP (Manifold Absolute Pressure)
If the MIL flashes once, it means there is damage to the MAP sensor. The damage is easy to detect because the blink is only once and short.
This can cause the motor acceleration to be less good, and the engine power is less powerful at top speed.
Kedip 7 Kali – Sensor EOT (Engine Oil Temperature)/ECT (Engine Coolant Temperature)
If the MIL flashes seven times and is short, then there is a problem with the EOT or ECT sensor. The reason is that the sensor circuit is not working or there is an intermittent failure.
This can cause the engine to heat up quickly.
Kedip 8 Kali – Sensor TP (Throttle Position)
The third Honda MIL code is indicating a problem with the TP sensor. Typically, this problem occurs when the MIL flashes eight times and is short.
This can happen because the sensor or circuit is not working. It could also be caused by loose contacts at the sensor unit connector, which can cause wasteful fuel, poor acceleration, and the engine often shuts down.
Blink 9 Times – IAT Sensor (Intake Air Temperature)
The next MIL code is a short flash nine times which means there is a problem with the intake air temperature.
Much like the previous MIL code, the cause is most likely a sensor or circuit malfunction or loose contacts in the sensor unit connector.
This can cause acceleration to be less good and the engine to be less powerful in the middle rounds.
Blink 11 Times – VS (Vehicle Speed) Sensor
If the MIL flashes once long and once short, then there is a problem with the VS sensor because the sensor or the circuit is not good or the contact is loose from the VS sensor connector.
Please note, on Honda motorbikes, usually long blinks have a value of 10 and short blinks have a value of 1.
If this problem occurs, it can make the speedometer indicator on the motorbike not work and the ISS (Idling Stop System) also does not work properly (especially for Honda motorbikes that use the ISS).
Blink 12 Times – Injector
The next MIL code is one long flash and two short flashes. This means code 12 which indicates a problem with the injector.
This can happen because the injector or its circuit is not working or the contact is not good at the injector connector.
If this problem occurs, it can cause the engine to not start, and the ignition coil, fuel pump and injectors to die.
Blink 21 Times – Oxygen Sensor (O2)
If the MIL flashes twice long and once short, it indicates code 21.
The code notifies that there is a problem with the O2 sensor. The cause of the problem is the sensor or its circuit not working properly or loose contacts on the oxygen sensor.
This can cause the engine to be difficult to start or a popping sound in the exhaust section of the motorbike.
For information, the oxygen sensor is a sensor to regulate the entry of air into the engine. If it’s dirty, it needs to be serviced to get it back to normal.
Blink 29 Times – IACV (Intake Air Control Valve) Circuit
Next, there is code 29 which indicates that there is a problem with the intake air cut valve. This code is indicated by the existence of two long and nine short blinks.
The intake air cut valve functions as a component that enhances combustion in the combustion chamber.
If there is a problem with the component, it is most likely due to the network not working properly or a loose contact on the IACV sensor.
This can cause the engine to be difficult to start, rough stationary centers, and wasteful fuel consumption.
Blink 33 times – ECM (Engine Control Module)
The next MIL code indicates a problem that is quite serious. If it shows code 33, it means there is a problem with the ECM. This is indicated by a long blink three times and also three short blinks.
ECM itself is a component that functions to limit fuel use without reducing engine performance.
The cause of this problem with the ECM is either a faulty circuit or loose contacts in the ECM connector. This can cause the engine to not be started, even so it often turns off.
Blink 52 Times – CKP (Crankshaft Position) Sensor
Another problem that is quite serious is code 52. This is indicated by five long and two short blinks indicating a problem with the CKP sensor.
The sensor functions to provide a signal to the ECU or ECM in accurately detecting the crankshaft angle and engine rotation, so that it can adjust the duration of fuel injection correctly.
The cause of this CKP problem is the sensor or network not working or loose contact on the sensor.
This can cause the engine to be difficult to start or die frequently, rough stationary rotation, and less motor acceleration at all speeds.
Blink 54 Times – BAS Sensor (Bank Angle Sensor)
The last code is code 54, where the code is indicated by five long flashes and four short flashes. This code notifies that there is a problem with the bank angle sensor which has a vital function.
The bank angle sensor is a sensor that is used to turn off the engine when the motorbike falls. If there is a problem with this sensor, it is most likely caused by a malfunctioning sensor or circuit or loose contacts on the sensor.
This of course can cause the bank angle sensor to not work optimally.
Author: Nadya Andari
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