You can't. You need the codes and a scanner.
Simply pulling the battery cables will not work on this minivan, you must reset the codes with a code scanner. I disconnected the battery cables for 24 hours and still had to borrow a snap-on scanner from a friend to read and reset the codes.
Answering "How can you diagnose a 1998 Honda accord without an OBD scanner?"
Code P1684 simply means the battery was disconnected within the last 50 key starts. Either turn the key another 50 times with the battery connected, or use an OBD scanner to wipe the code.
A 2002 Ford Focus may not register with a computer scanner due to several reasons. The most common issues include a blown fuse related to the OBD-II system, a malfunctioning or disconnected OBD-II port, or problems with the vehicle's engine control unit (ECU). Additionally, if the battery has been recently disconnected or is weak, it may prevent the scanner from establishing a connection. It's advisable to check these components to troubleshoot the issue.
Bring it to a shop that has an ABS scanner
You need an OBD scanner to diagnose faults and reset the lights. You can try disconnecting the car battery and reconnect after 10 ton15 minutes and it may do the trick
Disconnect the battery and leave it disconnected for at least 30 minutes, or have someone with a scanner, erase the code.
After reading the codes, with a scanner. You repair cause of code, and then can reset code with the scanner.
To reset the engine light on a 2011 Kia Sportage, you can disconnect the car battery for about 15 minutes to clear the codes. Alternatively, you can use an OBD-II scanner to read and clear the trouble codes that triggered the light. After addressing any underlying issues, reconnect the battery or use the scanner to reset the light. If the light comes back on, it's essential to diagnose and fix the problem causing it.
P0404 means:Exhaust gas recirculation circuit range/performance
You need to go to a shop that has a scanner and they can retrieve the codes and diagnose the problem for you.
use a scanner, or unhook battery.