On iOS, you need to trigger a task switch and force close all other OBDII apps. Sometimes this is not exactly a trivial task. Solution: Disconnect and force quit another program. ![]() Another program is occupying the communication channel with the adapter. Thinking that Bluetooth LE will be faster than Bluetooth is also a mistake. The Bluetooth version on your phone does not matter. With one exception: OBDLink MX+ (they have a direct contract with Apple, so they were allowed). Adapters that only support classic Bluetooth will not work on iOS. If your adapter supports both Bluetooth and Bluetooth LE, then on Android it is recommended to choose classic Bluetooth, but on iOS you have no choice and are forced to use Bluetooth LE anyway. If your adapter only supports Bluetooth LE (Kiwi 3, OBDLink CX), you must select the Bluetooth LE (4.0) communication method. If your adapter only supports classic Bluetooth, you must select the Bluetooth communication method. These are fundamentally different ways of wireless communication. IMPORTANT! Bluetooth LE is different from classic Bluetooth. Solution: Most Android adapters work via “classic” Bluetooth, but sometimes there are adapters that work via Bluetooth LE (4.0). You have selected the wrong connection type. To eliminate possible confusion, I recommend removing all unnecessary adapters from Android settings. Solution: Go to Settings -> Adapter -> tap the “Device Name” field to select the device and select the correct ELM327 adapter there. Therefore, if you have not selected the adapter that is connected to the car’s connector, the program will not be able to connect to it. The connection is made not by the name of the adapter, but by its address. Adapters can have the same name (usually OBDII) but a different address. You have multiple adapters with the same name and selected the wrong adapter. Therefore, you do not need to choose “M圜ar”, “Opel”, “Samsung” or “iPhone”! Remember: the name of the adapter is never associated with either the brand of your car or the brand of your phone. Usually the name of the adapter is OBDII or something related to the brand of the adapter (eg Viecar, V-Link, OBDLink). Solution: Go to Settings -> ELM327 Adapter -> tap the “Device Name” field to select the device and select your ELM327 adapter there. You have selected the wrong device in the program settings.Ī very common problem is when users, instead of selecting the ELM327 adapter in the program settings, select some other device for connection (for example, a car multimedia system). An exhaustive list of possible connection problems with the ELM327 adapter.Īttention! This list only refers to the connection to the ELM327 device itself and does not cover connection problems with the vehicle ECU.
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