i just did a ls.vtec in my da. i kept it obd0 for now (im going to change it in like a month or two). i got a code #2 which is the secondary o2 sensor. i have a pr3 ecu. what o2 sensor do i need to get for that secondary? another one wire o2??

 

or if theres anyway i can bypass that second o2

 

anybody know?

 

ttt. nobody knows?????????

 

OBD-0 has secondary o2?? Even OBD-1 doesn't...

 

are you sure? because if there was a secondary o2 code it would be like po137-po139 or po141 those are obd2 codes if you look at them on a scanner but if it was just the check engine flashy deely it would be codes63 and 65 to tell you the truth i don't even know if there is a code #2 and to ls-n he is right as well only obd2 has secondary o2 its the o2 sensor behind the cat. try getting a scanner on it. i doubt you could do it but that will be more strait forward than flashing lights. hope you get everything straitened out

 

Yeah I figured he was reading the code wrong.

 

ECU CODES (Thanks to Drag III Integra)

1 O2A - Oxygen sensor #1
2 O2B - Oxygen sensor #2
3 MAP - manifold absolute pressure sensor
4 CKP - crank position sensor
5 MAP - manifold absolute pressure sensor
6 ECT - water temperature sensor
7 TPS - throttle position sensor
8 TDC - top dead centre sensor
9 CYP - cylinder sensor
10 IAT - intake air temperature sensor
12 EGR - exhaust gas recirculation lift valve
13 BARO - atmospheric pressure sensor
14 IAC (EACV) - idle air control valve
15 Ignition output signal
16 Fuel injectors
17 VSS - speed sensor
19 Automatic transmission lockup control valve
20 Electrical load detector
21 VTEC spool solenoid valve
22 VTEC pressure valve
23 Knock sensor
30 Automatic transmission A signal
31 Automatic transmission B signal
36 traction control found on JDM ecu's
41 Primary oxygen sensor heater
43 Fuel supply system
45 Fuel system too rich or lean
48 LAF - lean air fuel sensor
54 CKF - crank fluctuation sensor
58 TDC sensor #2
61 Primary oxygen sensor
63 Secondary oxygen sensor
65 Secondary oxygen sensor heater
67 Catalyst low efficiency. (same as P0420)
70 Automatic Transmission Malfunction w/AT Controls
71 random misfire cylinder 1
72 random misfire cylinder 2
73 random misfire cylinder 3
74 random misfire cylinder 4
80 Exhaust Gas Recirculation insufficient flow detected
86 ECT Sensor (Engine Coolant Temperature) circuit range / performance problem
90 Evaporative Emission Control System leak detected in the fuel tank area
91 Evaporative Emission Control System insufficient purg


the light flashed once...once....

the jdm pr3 has a secondary o2

 

I would say any 1 - wire will do. Yeah, you need a secondary o2 for pr3 ecu.

 

does it go before the cat? would a one wire o2 work?

 

Both o2's go on the exhaust manifold runners.

 

thanks so any one wire should work? do i wire it straight into the ecu?

 

you can always have a tuner disable the second o2....

 

yea i might do that. but i might just go and spend the extra 15 dollars and get the o2 sensor for now.