|
|
PO1411 - Downstream 02 Sensor - Please help!
|
|
|
| |
|
protege1.6
User
May 24, 2017, 2:32 PM
Post #1 of 15
(2441 views)
|
PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
Hi there, So I have a 2000 Mazda Protege 1.6L engine if it doesn't already show that on my profile. The CEL code is P1141: Downstream I know this code suggests there is an issue with e the downstream 02 sensor,however I already installed a new one in August! My friend did some voltage testing: * 5V coming out of the heating circuit * No voltage coming out the PCM! --------->> What does this mean? So what else should I check , before I go and buy yet again another 02 sensor??? Gas mileage has deterioted! Previously I had a po420 cat code, but that didn't come up this time. Help!
(This post was edited by protege1.6 on May 24, 2017, 2:34 PM)
|
|
| |
|
Hammer Time
Ultimate Carjunky
/ Moderator
May 24, 2017, 4:03 PM
Post #2 of 15
(2424 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
Unplug the sensor and you should have 12v on the orange wire with the key on. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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.
|
|
| |
|
Discretesignals
Ultimate Carjunky
/ Moderator
May 25, 2017, 1:10 PM
Post #4 of 15
(2390 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
Power for the heater doesn't come from the PCM. The power comes from the ignition switch (on position) and the PCM grounds the heater circuit to turn it on. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
|
|
| |
|
Discretesignals
Ultimate Carjunky
/ Moderator
May 25, 2017, 1:42 PM
Post #5 of 15
(2378 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
Trace the black/blue wire. It comes from the ignition switch. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
|
|
| |
|
Hammer Time
Ultimate Carjunky
/ Moderator
May 25, 2017, 1:49 PM
Post #6 of 15
(2374 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
You're right, I followed the wrong wire but I see it goes through a fuse between the switch and the sensor (engine fuse 10A) in the inside fuse box behind the left kick panel. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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
May 25, 2017, 4:58 PM
Post #8 of 15
(2354 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
Just check the fuse in the left lick panel. If that's good, take it to the mechanic. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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
May 25, 2017, 5:19 PM
Post #10 of 15
(2348 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
Gee, that's a tough one. If the fuse is no good, what should you do? Maybe replace the fuse. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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.
|
|
| |
|
Discretesignals
Ultimate Carjunky
/ Moderator
May 26, 2017, 4:56 AM
Post #11 of 15
(2336 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
If the fuse was blown, the engine wouldn't run. The fuse protects the circuits for the O2 sensor heaters and ignition coils. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
|
|
| |
|
Hammer Time
Ultimate Carjunky
/ Moderator
May 26, 2017, 5:06 AM
Post #12 of 15
(2332 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
That only leaves the wiring and that is beyond his ability so he is back to taking it to the shop. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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
May 26, 2017, 9:43 AM
Post #14 of 15
(2315 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
OK, then go ahead and locate the problem. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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.
|
|
| |
|
TGonnion
Novice
Aug 18, 2017, 12:01 PM
Post #15 of 15
(2174 views)
|
Re: PO1411 - Downstream 02 Sensor - Please help!
|
Sign In
|
|
Incorrect advice deleted Wal-Mart: Auto Care Center Service Manager 2005 FORD CROWN VICTORIA POLICE INTERCEPTOR 2001 HONDA CIVIC EX
(This post was edited by Hammer Time on Aug 18, 2017, 12:30 PM)
|
|
| |
|