The pel Corsa code 21 error means there is a problem with your vehicle’s left turn signal light. So your left turn signal may not be on.
Some users who get the Opel Corsa code 21 error also get this error when the left turn signal light is on. There is an explanation for this situation:
The vehicle’s computer is constantly checking the vehicle’s systems. If it detects an interruption in the current to the last signal lamp or a lack of contact, instantaneous power loss, etc., it gives a code 21 error.
Even if there is a slight contact between the bulb holder and the bulb, this is perceived as an error. However, when you turn on the signal lamp, due to the continuity of the outgoing electricity, this non-contact disappears and the lamp turns on.
In such a case, if you change the lamp because I got a code 21 error, you will still get the same error. The real problem here could be in the bulb holder or it could be a sensor malfunction. You should look at these.
In addition, the voltage of the current to the bulb may not be suitable or there may be an electrical problem. The auto electrician will solve this problem, the user who does not have much experience in repair has no choice but to take his vehicle to the mechanic.
It is possible that there is a brain malfunction, but this is a small possibility and when there is a problem that cannot be solved, it is necessary to stay away from the repairmen who directly blame the brain malfunction.
The Opel Corsa code 21 error is not a problem that is difficult to solve, it needs an expert’s attention.
If the engine fault lamp is on with the Opel Corsa code 21 error; When you get the Opel Corsa code 21 error, pay attention to whether any of the warning lamps on the instrument panel of your vehicle are on. For example, if the battery light is on, perhaps the problem is that the ignition system is not working properly.
Or if the engine fault lamp is on, the Opel Corsa code 21 error may be a reflection of another problem in the vehicle. When the engine fault lamp comes on, it is necessary to read the on-board computer to the diagnostic device. The device will present you the error code generated by the vehicle computer. This error code will give you a clue about the problem.
In conclusion;
I do not want to confuse you about the Opel Corsa code 21 error. In summary;
When you get this error, check the left turn signal lamp. If it’s punctured, replace it. What if the problem is solved? Let’s say the lamp is on, then the problem may be in the bulb holder, sensor or bulb connections in the socket. When these are checked, it will most likely be understood where the problem originates from.
However, sometimes the Opel Corsa code 21 error may appear due to another malfunction in the vehicle. In this case, the warning lamps on the instrument panel and the fault codes read from the fault diagnosis device will help us understand what the problem is.
And finally, I would like to state that the code 21 error means the same thing not only for Opel Corsa, but also for other Opel vehicles such as Opel Meriva and Opel Astra.
