Zabalal

Hey guys! I have three codes pop up on my check engine light, and was wondering if somethings connecting the three.
P0327: Knock sensor (showed this code 2 times)
P2187: Bank 1 too lean (showed this code 4 times)
P0106: MAP sensor (showed this one once)

The car is running perfectly. I'm having issues with the battery, and plan to replace it next paycheck. Just wondering if there is something that I'm missing. So you guys know, this car has been up north most of her life. Had an issue with the turbo, and just needed to replace some wiring that was rusted from salt. So I also surmise that a connection somewhere needs to be rewired. Thanks in advance for any tips!

J W Davis

Weak battery or high drain will cause many of these faults. I figure the new battery will clear things up.

RJ_RS_SS_350

Agree, wait and see what happens with a new battery, it might clear them all up.

Well, technically, replacing the battery will clear the codes. I mean they may not come back.

Oldblue

Welcome to the site, weak battery , agreed. I see you have a 2009 SS

The voltage not getting to the sensor in the P0327

https://www.obd-codes.com/p0327

Same for the P0106, possibly caused by low voltage or loose ground

https://www.obd-codes.com/p0106

But the P2187 may be because of other issues, have a read here

https://www.obd-codes.com/p2187

So, check the harness at the MAP sensor, check the ground wires, replace the battery as you intended, then watch for the CEL to possibly light up again in a while

Zabalal

Thank you so much guys! I'll replace the battery first thing Tuesday, and give you guys an update!

shugarescu

Any update ...? Did the P2187 code cleared / re-appeared after you changed the battery ?

firemangeorge

Zabalal hasn't been back to the site since his last post, 7/28/2017.

Oldblue

A 2 poster!