Again, $7E8 & $7E9 are not engine codes. A basic OBD2 scan tool offers a few different modes (from 1 to 10) to perform particular tasks on your cars. In this case, $7 represents mode 7, which basically means diagnostic code request. E8 (or E9) indicates that you request fault codes from module E8 (or E9). In conclusion:
You will find below several pictures which will help you find your OBD connector in your Citroen C4 Grand Picasso (2013 - 2016) RHD. The OBD II port is located on the passenger side. The OBD 2 socket is visible inside the glove box on the right. Find a compatible scanner for Citroen C4 Grand Picasso (2013 - 2016) RHD. Here is the OBD II port. 7aHZCdj.
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    • citroen c4 cactus obd location 2015