[turboranger]

ok so i know the codes have something in common mostly the fact that there 02 related, right?

so anyways here are the codes i pulled

P0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1):
does bank 1 sensor 1 mean its the O2 sensor in the up pipe?
and low voltage readings mean that the sensor has gone bad, OR does it mean i have a loose connection?

P1153 O2 Sensor Circuit Range/Performance (High) Bank 1 Sensor 1:
as for this, i think it means im running rich OR lean im not to sure which.

these codes popped up a couple hours after i put a half tank of gas in.


i drove it around and did not here any knocking, but on my AP the A/F is running at 16.0 in all gears, then the CEL comes on.

is the car still drivable?

[turboranger]

so researching further more, i find out that it can be many things NOT involving the wide band primery 02, from what i have read is that the codes ive been getting can involve the MAF for one, the other a boost reference leak.

the codes i pulled this morning going into work was 02 sensor low circuit voltage b1 s1, system running lean, and 02 high performance b1 s1

now i do not hear any knocking which leads me to believe that the systen as actually NOT running lean, as well as my exhaust fumes seems to smeel abit richer then usual.

the engine does seems to idel low at some points as well as some low pops in the exhaust during shifts.

my plugs are less then a year old as well.

im going to continue to search the bugs, but hoping to catch some others opinions here.

[boondocksaint]

Bump.

[turboranger]

bump for opinions

[gosu]

Low o2 voltage = lean, so ecu adds fuel = richer. But the code is from the same sensor, hmmm . 02 could be going bad. Do any maintenance to the car lately?

[VanishingPoint]

From what I could find its not rich or lean its a open or short in the wiring harness/O2 sensor/ECU.

The procedure asks to check the O2 connector for water, then goes on to check the harness for opens and shorts to ground. After that its replace O2, or ECU.

I believe you have a wiring/harness issue, with the possibility of a bad O2. Visually check the harness for damage rubbing on exhaust, or a sharp object. Check your connectors by pulling them apart and look for damage and or water. After this we would need to start tearing things apart to get at the ECU connector to do some meter checks. If you have a meter we can try it if you want, if not I would take it in to a shop.

Clear the codes and see if it comes back first then try the above.

Good luck,
Tony

[turboranger]

Originally Posted by gosu

Low o2 voltage = lean, so ecu adds fuel = richer. But the code is from the same sensor, hmmm . 02 could be going bad. Do any maintenance to the car lately?

last maintenance work done was when i did an oil chance which was 2300 miles ago, at the same time i did the secondary 02 sensor which was replaced with a stock unit.

i figure it was either bad gas or the 02/ground gave up its ghost.

thanks for replying!!!

[turboranger]

Originally Posted by vanishingpoint

From what I could find its not rich or lean its a open or short in the wiring harness/O2 sensor/ECU.

The procedure asks to check the O2 connector for water, then goes on to check the harness for opens and shorts to ground. After that its replace O2, or ECU.

I believe you have a wiring/harness issue, with the possibility of a bad O2. Visually check the harness for damage rubbing on exhaust, or a sharp object. Check your connectors by pulling them apart and look for damage and or water. After this we would need to start tearing things apart to get at the ECU connector to do some meter checks. If you have a meter we can try it if you want, if not I would take it in to a shop.

Clear the codes and see if it comes back first then try the above.

Good luck,
Tony

the code im pulling is MOSTLY P0131:


yea im going to try to do a resistance test on the grounding wire between the 02 and ECU to see if i have a short in the grounding wire. i believe it should read above 1m ohm in resistance, if so i think i need to replace the wide band/02 sensor. i believe if its below 1m ohm i need to find the fault in the grounding system.
can anyone concur if this makes sence to them?

side note: vanishingpoint/tony, is there any chance i can ask for your help if i run into problems?

thank you all
Donnie G

[turboranger]

bump for any input

[VanishingPoint]

Originally Posted by turboranger

the code im pulling is MOSTLY P0131:


yea im going to try to do a resistance test on the grounding wire between the 02 and ECU to see if i have a short in the grounding wire. i believe it should read above 1m ohm in resistance, if so i think i need to replace the wide band/02 sensor. i believe if its below 1m ohm i need to find the fault in the grounding system.
can anyone concur if this makes sence to them?

side note: vanishingpoint/tony, is there any chance i can ask for your help if i run into problems?

thank you all
Donnie G

I will do what I can.
Sounds like your on the right track. Let us know what you come up with. I have the DTC procedures if you need them, PM me.

Tony