![]() You must have an existing code for the Clear codes button to enable, which will appear at the upper right corner. Your vehicle monitors for repeated errors, once past a set threshold it may either become a stored code or be removed from pending should the errors cease. Pending Codes: Pending codes are not yet confirmed and will not set off your check engine light. Your check engine light will be illuminated if there are any stored codes. Stored Codes: Stored codes are active (current) codes within your system. You might come across an easy fix that can be done (such as a bad gas cap). Once you have codes, if you are not familiar with cars, you can Google the code (often in format P#) along with your vehicle make and keywords such as cost to get a general idea of what others may have been charged to fix the issue. Codes will be provided with an identifier and name, if any.Now that we have connected, it's straight forward to figure out what codes your vehicle is throwing. Other apps I suggest looking into: DashCommand and Rev Also note that the cheaper adapters will generally work well but may have a choppy refresh rate when viewing sensor data. Note: There are other OBD iPhone solutions available so while this guide is limited to FourStroke the same basic steps are followed for most OBD mobile related applications. An iPhone with iOS 7.1 or later and the free app FourStroke downloaded. ![]() Most OBD2 Bluetooth adapters will not work with iPhone apps unless they specifically confirm compatibility. ![]() An OBD2 Wifi Adapter (either from eBay or use ones on Amazon linked in FourStroke's website).All cars sold in North America after 1996 should support this. ![]() In this I will be demonstrating the use of 'FourStroke' iPhone App to pull data from a vehicle. With the use of a very cheap (10$!) adapter you can use your iPhone as a diagnostic tool to figure out your vehicle's check engine light, clear the codes, or view sensors (such as temperatures, oxygen sensor readings, and vehicle speed). ![]()
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