Hi all,
I have a 2004 Civic (4 Dr) and had the car checked after the Check Engine light appeared. The code that returned was a P0135 (S1) Oxygen Circuit Heater Malfunction.

Could anyone tell me about which part I will require and pricing, etc? I've checked around and have seen prices from $39.00 to $491.

Thanks in advance.

 

That's huge difference in pricing for O2 sensor, maybe just a loose wiring, check connector, clear code, drive awhile see if it come back on.