13 is the code. If you look up on the forum you can find a manual with the steps to check out the code. I believe it’s the intake air sensor fault. The manual will tell you where to start.
Testing sensors is fairly easy. If you find a service manual there should be the specs for what voltage the sensors should be receiving. What I have done in the past is take a small pin to puncture the wire clip an aligator test lead to my positve on volt meter and negative to ground. With the machine running or key on you should be able to read the voltage to signal or from signal. I have used this in the past to test fuel injection sensors. When done , you could apply some liquid electrical tape to the small puncture to seal it up.
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