Civic-EG.com Forum 3.3.1

- Wed Apr 15, 2009 2:18 am #110664 i have a D15b in my EJ1 and since i swappd to a p28 ecu instead of a p08 it throws code 41 and thats the O2 sensor heater but i dont know how to fix it. any ideas?

- Wed Apr 15, 2009 2:28 am #110669 i swapped a new p28 in my d16z6 and it throws code 1, the #1 O2 sensor but it drives fine and i get good gas milage.

single slammer = one cam of fury.


si = supercharger inside

- Wed Apr 15, 2009 2:31 am #110672 im only gettin like 24-26mpg the best i got was 31 and that was all highway goin to the beach. and i can smell gas

- Wed Apr 15, 2009 2:34 am #110674 The car is looking for a secondary o2 sensor. is the d15b vtec or non?

what year is your civic? They started putting secondary 02 sensors in late 95.

I would swap your ECU back to the p08 for now.

|95 Civic DX|03 Silverado 2500hd|97 Escort LX

- Wed Apr 15, 2009 2:45 am #110679 it is a 95 this is my old ecu i use on z6 before i blew it up and swapd to the D15b i went from the p08 to the p28 because the p08 is a 1 wire O2 and my O2 went bad and i got shitty gas milage but it only has 1 O2 sensor

- Wed Apr 15, 2009 2:57 am #110682 you need to get a 4 wire o2 sensor that is your problem. its searching for the heated element in the sensor and with only having a 1 wire on there then its not able to receive the signals from the o2 sensor correctly.

|95 Civic DX|03 Silverado 2500hd|97 Escort LX

- Wed Apr 15, 2009 10:40 am #110749 i put a bosch 4 wire in it when i swapd ecus