str8ridin

So, the CEL started blinking at me the other day. I made sure the gas cap was shut tight etc. and continued driving. The light just stayed on...then kept blinking every once in a while again. So, I changed the MAF (yes, i had a extra one liying around.) Same results - no change and hesitation on accelarating. So I got an OBDII reading and here is what I got:

Trouble Codes:

P0150 O2 Sensor Circuit Malfunction

P0305 Cylinder 5 misfire Detected
P0306 Cylinder 6 misfire Detected
P0307 Cylinder 7 misfire Detected
P0308 Cylinder 8 misfire Detected

P0300 Random/Multiple Cylinder Malfunction (Bank 1 Sensor 2)

Pending Codes:

P0141 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

WTF? So, I stopped driving her until I can figure it out. Any ideas? How are the cylinders ordered? It seems as though 5-8 are having problems...meaning the 02 sensor is bad on that side? I have 80K miles....and so far, the engine has been a rock. Help before I take it to the dealer.....

Flawless

Start from basics first. Check to make sure your spark plugs are fine and working.

str8ridin

Thanks Flawless. How are our clyinders numbered?

clkal

i think if you change out the rear set of 02 sensors, everything should be fixed......

str8ridin

Why do you say the rear?

and you lucky *******, your cars in your sig are all my favorite!!!

clkal

not really lucky....just a hard worker =)

I say the rear O2 sensors cuz I had the exact same problem w/ my 430 a couple of years ago before I sold it. Same type of codes about cylinders misfiring, and the mechanic replaced the rear O2 sensors and the check engine light went away, and the car drove so smoothly after that.

do you have a place where you can get quality work done at reasonable prices?

str8ridin

Unfortuantely, no, not yet. IF it's just the rear 02 sensor, I think I can do that myself. I may take longer than any shop, but it's a hella lot cheaper.

str8ridin

02 sensors were the culprit - changed them and now the car gurgles like a V8 and accelerates smooth and silky again! Thanks for all the help.

clkal

glad I was able to help.

drli

Did you change both sides? or did you figure out which sensor was in Bank 1 Sensor 2??

I am now getting one of the same codes. P0141.