Just as the title says. I am running b16 in a 93 teg with p30 ecu and getting the code 20 (ELD): code 41 o2 heater malfunction. The helms for 93' tegs doesn't even have troubleshooting for code 20. My first question is how would I go about clearing this code???

For some reason the guy I purchased the car from was only running a single wire O2 sensor on an obd-1 ecu (go figure??) which is causing me to get the O2 heater manfunction b/c the heater isn't even hooked up. I know I need to just rewire everything so to have a 4 wire O2. But my second question is will these codes cause my motor harm or my ecu to run in open-loop mode????TIA

 

Bump........wheres all the help??

 

For the code 20, unfortunately I am not to sure for fixing the issue, but the ELD is what regulates alternator voltage to the battery, I believe.

I haven't had to fix an ELD issue yet.

As for the code 41 O2 heater malfunction. Add 3 wires for Heater Control on the O2 sensor..

You already have the WHT wire going to the D14 pinout.
You should have two BLK and one GRN on the O2 sensor.

Match as follows:

BLK -> Yel/Blk to the A25 pinout or to the power junction harness on the driver shock tower harness.
BLK -> Org/Blk to the A6 pinout which is O2 Heater Control
GRN-> Grn/Wht to the D22 pinout which is Sensor Ground.

It does not matter which blk goes to where, just as long as they both go to their direct pinouts.

 

sorry about the eld, my friend has had one for a while and his car acts very funny reving wise somtimes to only 6K and rarely to 7500 when it is suppost to go to 8k. eld is a wiring short somewhere and is one of the reasons we stipped the whole dash in his daily. still no fix. but his head light shorts out too. do you have any electrical probs.

 

No the car has ran fine to 8k all day!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by poison &raquo;</TD></TR><TR><TD CLASS="quote">For the code 20, unfortunately I am not to sure for fixing the issue, but the ELD is what regulates alternator voltage to the battery, I believe.

I haven't had to fix an ELD issue yet.

As for the code 41 O2 heater malfunction. Add 3 wires for Heater Control on the O2 sensor..

You already have the WHT wire going to the D14 pinout.
You should have two BLK and one GRN on the O2 sensor.

Match as follows:

BLK -&gt; Yel/Blk to the A25 pinout or to the power junction harness on the driver shock tower harness.
BLK -&gt; Org/Blk to the A6 pinout which is O2 Heater Control
GRN-&gt; Grn/Wht to the D22 pinout which is Sensor Ground.

It does not matter which blk goes to where, just as long as they both go to their direct pinouts.

</TD></TR></TABLE>

Thank you very much that information helped alot, on its way to getting fixed. Also do you (Poison) have any idea where to start on a ELD code???

 

Since I don't have the right year car, pins & wire colors are probably different, but here goes. (For a '95 Integra, the ELD is on pin D10 of the ECU. Green wire with red stripe.) If you've got any JDM stuff, be aware that only USA cars have an ELD in the first place. Some wiring might be missing altogether?

The ELD is a small resistance that measures the electrical load. Electrical guys would call it a current shunt. The wire coming off it would be slightly less than full system voltage, getting a bit lower for each electrical thing that you turn on. I don't think the ECU uses it to control the alternator, the alternator controls itself (the voltage regulator is built in). The ECU uses it to anticipate what it needs to do with the IACV to hold a steady idle.

You can look for a break in the wire from the ELD back to the ECU. If that wire were shorted, I think you'd either blow one of the big fuses or you'd have more electrical troubles.

 

Thanks for the info JimBlake!!
Where would the wire from the ecu pinout (D10 i believe) for the ELD go too, and where is the ELD and what does it look like????

 

Mine hasn't screwed up, so I'm kinda vague. It's built into the under-hood fuse box. I think you have to buy the whole fuse box if the ELD is actually bad.

 

yeah i have heard thats the way to fix an ELD by replacing the under hood fuse box. But when i got my car the D10 pinout was gone the previous ower cut the wire. I can run a new one but would need to know where to connect it to in the under hood fuse box??

Thank you for all your help Jim Blake!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turboxsi &raquo;</TD></TR><TR><TD CLASS="quote">... I can run a new one but would need to know where to connect it to in the under hood fuse box??</TD></TR></TABLE>You're probably gonna have to get a Helm book for your year. I wouldn't promise that it's the same as 3rd-gen.