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ScoLoc
Novice Dec 29, 2012, 6:54 PM Post #1 of 26 (11566 views) |  Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| Replacing an upstream O2 Sensor in a 2010 Chevy Aveo with a Bosh Universal O2 Sensor (15730). All of the wiring instructions assume that two of the four wires from the original sensor will be the same color - indcating that those will be the heater wires. However, the Aveo Sensor has one grey, one purple, one white and one black wire. I can't contact Bosch on the weekend, and I'm stumped. Has anyone done this repair who can clue me in? Scott | | | | |
Hammer Time
Ultimate Carjunky / Moderator
 Dec 29, 2012, 7:05 PM Post #2 of 26 (11555 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| I really don't recommend using those at all. It's not worth the couple buck you save. It should have come with color code instructions. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. | | | | |
Hammer Time
Ultimate Carjunky / Moderator
Dec 29, 2012, 7:32 PM Post #5 of 26 (11519 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| OK, advice given............... advice ignored See ya ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. | | | | | | | | |
ScoLoc
Novice Dec 29, 2012, 7:56 PM Post #7 of 26 (11505 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| On the harness side, the wires are two white, one brown, and one brown with a black stripe. The OEM o2 unit has four wires. Grey, white, black and purple. Bosch lists the 15730 as the correct replacement. The Bosch has two white wires, one grey and one black. The wiring tableincluded with the Bosch incorrectly states that two of the OEM wires would be the same color. If that were true, the instructions would otherwise make sense. But, because that is not true for my unit, the instructions are of no help. I understand that I may have wasted my $36.00 and will need to advise her to spring for an OEM replacement, but thought I would at least ask if anyone might know how its done before giving up. Thanks.
(This post was edited by ScoLoc on Dec 29, 2012, 8:06 PM) | | | | |
Discretesignals
Ultimate Carjunky / Moderator
 Dec 29, 2012, 8:06 PM Post #8 of 26 (11499 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| The two white wires on your new sensor are the heater wires. The grey is ground and black is the signal. Is the old sensor a Delphi? It should say on the body of it. Don't care about the color of the wires on the old sensor. Asking what are the color of the wires on the engine harness that the 02 connector plugs into. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.  (This post was edited by Discretesignals on Dec 29, 2012, 8:10 PM) | | | | |
Discretesignals
Ultimate Carjunky / Moderator
Dec 29, 2012, 8:22 PM Post #11 of 26 (11479 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| Nick's right, you could rig the sensor to work, but you don't want to take a chance of it wrecking your catalyst if the response times are different. Just curious. What happened to the old sensor? Seems kind of strange for an O2 sensor that has been in service for only 2 years to crap out. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved. (This post was edited by Discretesignals on Dec 29, 2012, 8:23 PM) | | | | | | | | |
Hammer Time
Ultimate Carjunky / Moderator
Dec 29, 2012, 8:38 PM Post #14 of 26 (11469 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| This is likely a 5v reference circuit. You can't use a universal sensor on that. There are 4 different sensor configurations listed and none of them have a purple wire. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. | | | | |
Hammer Time
Ultimate Carjunky / Moderator
Dec 29, 2012, 8:45 PM Post #16 of 26 (11458 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| I hope you're messing with the right sensor. That's a downstream heater code. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. | | | | |
Sidom
Veteran / Moderator
 Dec 29, 2012, 9:55 PM Post #17 of 26 (11444 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| Hey Scott... Glad to see you decided against the universal....It would've been more trouble than it's worth....Personally I have had enough problems with the OE fit Bosch O2s, that I stay away from that brand.... If you want to trouble shoot the code then go ahead and start a new thread & we'll give you as much info as we can, as HT mentioned that code is for the downstream O2... I hope the only wires you trimmed were on the O2 & not the factory harness. This is a very low voltage system and total circuit resistance is even more critical the in the other circuits.... | | | | |
Sidom
Veteran / Moderator
Dec 29, 2012, 11:08 PM Post #19 of 26 (11435 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| You are more that likely going to want to replace the one you cut the wires on.... You can repair those but you have to be positive you have got the correct length wire and that the connection you make isn't changing the resistance of the circuit. The PCM use this sensor to see whats going on in the exhaust, it goes from 100mvs being a lean reading to 900mv indicating a rich reading. So you can see how just a little bit of extra resistance here or there can really throw off the readings... I know it's a bad deal.....In the automotive world there are some shortcuts that aren't quite so bad....You get a $20 set of pads and the pitfalls might be some squeeking or maybe get a lot of dust on your wheels......You go with the 1 year belts and maybe you're changing them a lot more often.... O2s are a little more critical, beside possibly using more fuel there is all the bad things that go along with that. That's cool you're trying to help out your son's girl....I'm sure you had the best intentions.....Good thing is at least you researched it......I'll leave the repair up to you, you know your soldering skills. The main thing would be to make sure all the wires are the exact same lenght and you get a good solder joint (no cold solder joints). Also it's critical it's sealed properly, heat shrink tubing, tape it up. OE is obviously the best way but I've had good luck with Denso when I can't go OE...I would stay away from Bosch, seriously. I'm sure some of the guys will chime in with the brands that work good for them......I've just had to warranty too many Bosch O2s to mess with them anymore....
(This post was edited by Sidom on Dec 29, 2012, 11:09 PM) | | | | |
Discretesignals
Ultimate Carjunky / Moderator
Dec 30, 2012, 10:50 AM Post #20 of 26 (11416 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| – The sensor receives the reference air
through the connection cable. This means
that the connector must be clean and dry.
Contact spray, and anti-corrosion agents
etc. are forbidden.
– The connection cable must not be
soldered. It must only be crimped,
clamped, or secured by screws Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved. (This post was edited by Discretesignals on Dec 30, 2012, 10:54 AM) | | | | |
Hammer Time
Ultimate Carjunky / Moderator
Dec 30, 2012, 1:25 PM Post #22 of 26 (11404 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| Hahaha ........................ Don't forget the phone line through it too. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. | | | | |
Hammer Time
Ultimate Carjunky / Moderator
Dec 30, 2012, 1:44 PM Post #24 of 26 (11392 views) | | Re: Wiring for Universal Bosh O2 Sensor (Chevy Aveo) | |
| No, they use a block of wood with a screw in it and wrap the wires around the screw. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. | | | | 
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