EF9_TryMe

To be exact, I already know the codes that my car is throwing, but I am curious to know if there is an actual remedy to pass emissions by fooling the ECU.

My following codes are:
P1362 - Top Dead Center Sensor No Signal
P1361 - Top Dead Center Sensor Noise. Current.
P0155 - Oxygen Sensor Heater Circuit Bank 2 Sensor 1 Current
P1337 - Crankshaft Position Sensor 2. No Signal, Current.
P1660 - Atchk Line Malfunction / AT - Engine Control Unit Halt. Current
P0135 - Oxygen Sensor Heater Bank 1, Sensor 1
P0141 - Oxygen Sensor Heater Circuit Bank 1, Sensor 2

I'm still confused on how I am getting a P0155 Bank 2, Sensor 1 Code. It doesn't make any sense, because a b18 4 cylinder only has one bank because it's an inline 4 which is what confuses the living heck out of me.

I'm not an actual computer whiz or electronic whiz.
A fix to fool the ecu into reading these codes with slight modification would be nice, but I'm not exactly too sure if that's out there or if anyone else has done it.
Any help would be appreciated, I just want to get this stupid car to pass so I can throw my old motor back in.

nub

No idea what you're using to pull codes to get a P0155 and P1660, not valid codes that I'm aware of.

For P0135 and P0141 check the under dash 7.5A, #15 fuse.

For the CKF code (P1337) you could try this bypass http://ff-squad.com/technet/ckftrick.htm since the OBD1 B18 doesn't have a CKF.

I'm not aware of any way around the TDC codes. Either the sensor in the distributor, the wiring or ecu are bad.

What are you using for the harness, ecu and distributor?

EF9_TryMe

I'm using an Automatic P75 OBD2a ECU to run the obd1 b18b1. The distributor it'self is obd1 as well. I had to re-wire my obd2a ek original harness to mate with the obd1 distributor.

I think I already know the problem for the o2's. They're not wired up yet. Lol.

The bank 2 code for the o2 is the one that threw me off a little, because I'm not really understanding how one could throw that on an inline 4.

Thank you for your input. I'll try those things out, and see where they lead.

The Harness is a original harness off of a dx 97 ek. The ecu is a automatic ls ecu, and the distributor is a obd1 b18b1.

EF9_TryMe

ttt...anybody else have any inputs ? would be greatly appreciated!!

EF9_TryMe

I don't mean to be a di** about bumping this thread up so many times, and I understand that I am breaking some forum rules. The reason being, I only have about 2 days left before I can register this car, and I really need to go get my emissions passed.

I did some research earlier, and found this:
http://www.superhonda.com/forum/f99/...d2-ecu-337498/

I'm not exactly too sure if this will pass emissions or not after performing some work inside of the ecu. Has anyone ever tried this ?

2nd question, Will a obd2a Greddy E-Manage get me to pass emissions on my stock setup ?

B(eighteen)C

your missing all those sensors that the ecu is looking for. you need a obd2 engine "AND" wire harness.

P1362 - Top Dead Center Sensor No Signal
P1361 - Top Dead Center Sensor Noise. Current.
These two codes are more likely from the crank shaft sensor. checks for tdc.

P0155 - Oxygen Sensor Heater Circuit Bank 2 Sensor 1 Current
P1337 - Crankshaft Position Sensor 2. No Signal, Current.
Bank 2 is the secondary o2 that sits "POST" of the cat.

P1660 - Atchk Line Malfunction / AT - Engine Control Unit Halt. Current
To get rid of this code. find a manual ecu. yes you can fail for this code. if you wanna know why then you can ask me.


P0135 - Oxygen Sensor Heater Bank 1, Sensor 1
P0141 - Oxygen Sensor Heater Circuit Bank 1, Sensor 2
This sensor is probably bad or code for this is on because it needs to compare info from secondary o2 and theres none present.

how does your car run? strong? weak? laggy?

EF9_TryMe

So none of the options above mentioned are going to work ?

The car runs perfectly fine. it runs a little bit on the rich side, but that's because I'm not
running a thermostat. When the weather is really cold, that's when it happens.

Then again, there is no closed loop corrections so the car runs in open loop all the time
due to a missing o2.

I'm assuming that my gas mileage has gone to ****, but that's the least of my worries.

B(eighteen)C

if you chip it and decide to remove some sensors reading from the ecu. im sure itll show incomplete monitors when they scan your obd2 sys.

if youre rich then youll fail emissions anyway.

where is your obd2 dx ecu? plug that in?

nub

Did you notice the link you posted to the thread about chipping an OBD2 ecu was 5 years old and went nowhere? If it were a valid option people with OBD2 chassis wouldn't be converting to OBD1 now.

Forget about trying to hack and work around the OBD2 system if you have to pass emissions by plugging into the DLC connector. You need to modify or change your OBD1 engine to work in your OBD2 chassis and ecu.


Nothing stated here is true.

EF9_TryMe

^Ehhh. I was actually with him on this one, but now I'm just confused because you're saying he's incorrect.

What exactly do I have to do then ? I really need to get this car running legally.

nub

Looking at it I think me saying he's wrong has to do with the way he posted. It looked like the whole thing was a statement and it looks like he copied and pasted your original post instead of quoting it.


But to what he did say about missing senors...OBD1 Honda dont have a CKF so you missing the sensor so it's throwing a code. Either get and OBD2 oil pump with the CKF and wire it in or try the bypass I put a link to ealier.

The TDC code I think might be with your wiring. It's in the distributor so unless someone removed it it's not missing.

Don't even know why you mentioned the O2 heater codes if you then say they're not connected. Install and connect.

You don't need an OBD2 engine, you need to add the components the ecu is looking for.

EF9_TryMe

The CKF trick makes no sense.

It says to depin it from the ecu connector that's going into the ecu. If you do this, then
why in the hell do you have to splice it in with the cyp sensor when it's not going to
pick up a signal because it has no connection with the ecu to begin with. It's an input.

I don't want to add another oil pump off of an obd2 vehicle just to regulate a false code.
It's too many variables involved, and a lot of trouble just being added into the mix.

HondaPartsHero

EF9_TryMe

Awesome!

First things first for tomorrow. After I come back from school,
I am going to wire up the o2 to see if it will take care of those o2's.
I'm having very high hope for those 2 codes being taken care of.

The only problem that rests aside is trying to locate an actual diagram regarding the
wire colors coming off of the primary o2 that's currently in my downpipe. I think it's
2 white wires, and 2 black wires coming out of the o2.

The colors for engine harness I am not quiet sure yet. I'll have to double check
tomorrow, and report back. I do really appreciate the help Honda-Tech.

HondaCRZY

I have this swap in my car and the gas mileage is horrible. Im hoping to fix that, does anyone have any ideas on what I need to do?

Is the timing advanced or is it the O2 sensors?