I am trying to pass emissions for my obd2 car and I keep throwing a code.

I am throwing: P0131 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low Voltage

I have checked the connection and it is fine. I have also tried another primary o2 and it still throws a check engine. What else do I need to check for or what could it possibly be??

Please help!!

 

i am having the same problem as this. has anyone come across it and how was it fixed?

 

Is fuse 15 blown? If so, look into the common short circuit problem of 6th generation Civics:

http://www.tegger.com/hondafaq...e.pdf

If the O2 sensor and its wiring are fine, then check the corresponding terminals at the ECU. If they too are fine, then you may have an ECU problem.



Modified by RonJ@HT at 11:03 AM 10/11/2008