Don't let your codes stay codes. This Kobra OBD-II Wi-Fi car code reader is down to $11.19 on Amazon with code PP94JP7K. It sells for $20 without the code and we haven't seen a sale on these readers in a couple months now. This version uses Wi-Fi, so it's compatible with iOS, Android, and, God forbid you're still using one, Windows phones. The problem with Wi-Fi is you can't always get it near your car. You can get this Bluetooth car code reader for $7.12 with code Z6KXA33D. That's down from a price of $13, but the Bluetooth version does not work with iOS. Skip using the phone altogether with Kobra's direct OBD-II professional diagnostic car scanner for $12.39 with code 7934LGIX. That's about $6 off what it normally goes for. You won't be able to transfer the data to your phone, but you can also scan and read the codes a lot faster and take action. The Kobra car code reader can connect to and read the code from any car made after 1996. It can then use Wi-Fi or Bluetooth (depending...