i got a 96 hx and it s throwing engine code 65. i've replaced the 5wire o2 sensor twice cleared the code. within 2 miles of driving engine light come on for the same code.
is there anything i'm doing wrong?
does somebody have a picture of the oxygen sensor diagram in their hx?

 

code 65 is for rear o2 sensor heater. i'm pretty sure your back one is a regular 4 wire.

 

A 2 second google search confirms code 65 is for the rear sensor. Why did you spend $80 on a front sensor?

 

ok i will replace the 4 wire o2 sensor next.
and no the 5 wire o2 sensor is 400 new, but found it locally for 30

 

replaced the 4 wire o2 sensor and still get engine code 65.
I've checked wires goin to both sensors and look good.
anybody else got any suggestions?

 

fuse?

 

theres a fuse that runs the o2 sensors?

 

didnt find any fuse or relay that looked related to 02's.......
any other suggestions

 

help!!

 

have you used a obd2 scanner to pull the actual p-code? might help identify the problem more specifically.

 

its worth a shot.

 

Wow, $400 O2 sensor egh? Are we talking about the same sensor? I just replaced my primary on my civic last weekend... it was $80 new.

I would check your secondary O2 sensor wiring harness. Maybe a wire got severed somewhere between the cat and engine bay. At least on mine, the wiring has a bung that fits into the frame. Maybe yours came loose and got cut on the frame.

 

i believe the 5 wire o2 sensors are specific for hx and vx models only. the cat is mounted on the exhaust manifold and both o2 plugs sit rite under the top radiator hose. i've checked the wires at that point and seemed to be ok. i cant think of anything else to do but to take it to the shop

 

head over to autozone or similar and have them put a scanner on it for free

 

the car dosent have wheels on it rite now so cant do that right now. gotta wait for a buddy to come over with his scanner but i will update.

 

a scanner isn't going to say a damn thing. 141 is rear O2 heater.

 

then whats code 65?

 

what?

 

65 is old school Honda codes, 6 long flashes, 5 short.
141 is OBD2 and the equivalent code. P0141 if it makes you feel better.

That'is all you will get, another form of the same code. It is still up to you to find what is causing it.

 

your right, any idea where to start?

 

gotcha, i was thrown off by the missing p0. looks like its time to start troubleshooting the wiring then