Error Codes! Help Please

I have a 88 Civic Hatch and am getting a code 1 and a code 16. Any ideas what might be causing those two together? I ran injector cleaner through and that subsided the check engine light from coming on for a while but now it comes back on again. Any help would be great.

I had the same two happened to me. I just reset the ECU and they went away.

1 is a faulty O2 sensor, 16 is a faulty fuel injector.

from www.4thgenerationcivic.com

Code 1 (1 flash) Oxygen content
Code 16 (16 flashes) Fuel injector


So i'm thinking something happened with the fuel injection and caused too much unburned gas to go through the exhaust manifold and triggered the o2 sensor......but thats just a guess.....anybody else have an idea?

I reset the ECU and they just came back eventually. I knew that 1 was O2 and 16 was fuel injector. I found an O2 sensor for like $30 at AutoZone and was wondering where the best place was to find injectors? How can I tell which one is faulty, the primary or the secondary?

Thanks guys

Originally posted by 88_DX_Hatch
I reset the ECU and they just came back eventually. I knew that 1 was O2 and 16 was fuel injector. I found an O2 sensor for like $30 at AutoZone and was wondering where the best place was to find injectors? How can I tell which one is faulty, the primary or the secondary?

Thanks guys


If you have a haynes or chilton, they should tell you how to test the injectors. But before you replace them, maybe pull them out, wipe them off good, and plug them back in, making sure they are secure, etc. Injectors wont be cheap.

Originally posted by kris



If you have a haynes or chilton, they should tell you how to test the injectors. But before you replace them, maybe pull them out, wipe them off good, and plug them back in, making sure they are secure, etc. Injectors wont be cheap.

I have a haynes and will deffinately check how to test the injectors. Thanks for the help, if anyone else has any ideas let me know 'cause it will all help.