Please Help!!n p0521 Code
12-09-2010, 09:11 AM
#21
Teching In
Join Date: Dec 2010
Location: Oklahoma
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
Looking at the link, shows the close up view of the Oil Pressure Sensor, Washer, Oil Filter, and O ring and a close up view of the location. Where is it in the engine compartment, I don't see anything to identify where that is, or even what that 'panel' is.
Sorry for asking a bunch of 'dumb' questions, when I had my Corvette there was a ton of info online about it, and where everything was located. Seems like there is very little technical info out there for these cars.
12-09-2010, 09:22 AM
#22
TECH Fanatic
iTrader: (4)
Join Date: Feb 2010
Location: Lawrencevile, GA
Posts: 1,467
Likes: 0
Received 0 Likes
on
0 Posts
thats ok what you are looking at is the intake manifold how it is on the car the side where the sensor is right in the front next to the throttle body. I will lok for a better picture and post it up for you
12-09-2010, 04:47 PM
#24
TECH Fanatic
iTrader: (4)
Join Date: Feb 2010
Location: Lawrencevile, GA
Posts: 1,467
Likes: 0
Received 0 Likes
on
0 Posts
yes take the cover off and it is right by the back of the throttle body where it connects to the manifold. I found picture to help you out. The braided line in the red circle it is right under that. Sorry i could not get a better picture for you.
02-08-2011, 08:19 AM
#27
Registered User
Join Date: Feb 2011
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Just started getting P0521 on my 2006 Impala SS too. Just got back from a long road trip. One thing I did that may have caused it is I added oil (because it was low) but I think I added a little bit more than I should have. The light came on a day or two later, and I got an oil change as soon as possible. It came back, and I've reset it 4 times and it comes back every time - definitely a problem.
Does anybody with a scantool know if this sensor is accessible over OBD? I have a tool but I don't see the PID listed, even in the advanced GM PIDs section.
Does anybody with a scantool know if this sensor is accessible over OBD? I have a tool but I don't see the PID listed, even in the advanced GM PIDs section.
02-08-2011, 08:27 AM
#28
Teching In
Join Date: Dec 2010
Location: Oklahoma
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
Personally, I have no clue if it's accessible over OBD, but I would guess no. It's cheap enough, and easy enough just to replace it. Got mine for $65 here: http://www.gmpartshouse.com/
Gene is a good guy with GREAT prices! (No affiliation, just had great service time and time again).
Is your car switching to 4cyl mode?
Gene is a good guy with GREAT prices! (No affiliation, just had great service time and time again).
Is your car switching to 4cyl mode?
02-08-2011, 08:45 AM
#29
Registered User
Join Date: Feb 2011
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
@cubsmurf Thanks for the link.
My car seems be locked to 8-cyl mode, even after I clear the code. Internally I think it knows that there's a problem and it just wants to be sure before setting a DTC.
The Fuel economy is absolutely horrible while locked in 8-cyl mode. Otherwise I wouldn't be so quick to fix the sensor.
My car seems be locked to 8-cyl mode, even after I clear the code. Internally I think it knows that there's a problem and it just wants to be sure before setting a DTC.
The Fuel economy is absolutely horrible while locked in 8-cyl mode. Otherwise I wouldn't be so quick to fix the sensor.
02-08-2011, 08:54 AM
#30
Teching In
Join Date: Dec 2010
Location: Oklahoma
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
Yeah, it's the sensor. It's easy to fix. honestly. 
Once it's switched out, it will start switching into 4cyl mode, but you will still need to clear the check engine light.
As stated above, you just need a 27mm deep socket, otherwise it's simple!
Once it's switched out, it will start switching into 4cyl mode, but you will still need to clear the check engine light.As stated above, you just need a 27mm deep socket, otherwise it's simple!
02-08-2011, 09:56 AM
#32
Teching In
Join Date: Dec 2010
Location: Oklahoma
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
02-08-2011, 05:32 PM
#33
TECH Fanatic
Join Date: Oct 2006
Posts: 1,190
Likes: 0
Received 0 Likes
on
0 Posts
When mine needed one it was an off the shelf part @ Autozone
http://www.autozone.com/autozone/par...mString=search
$40 ...
http://www.autozone.com/autozone/par...mString=search
$40 ...
02-12-2011, 08:48 AM
#34
Registered User
Join Date: Feb 2011
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Fixed! Fixed!
Took all of 10 minutes. Thanks for everybody's help on this forum (pics, socket description, etc).
Tools needed:
- Oil pressure sensor. I got mine from the dealership for $80
- 27mm Deep well socket with extension to reach down in there
After replacing it, I drove around for a bit, reset the DTC with my Android app and immediately displacement-on-demand (DOD) started working again. It's no longer locked in 8-cyl mode.
Took all of 10 minutes. Thanks for everybody's help on this forum (pics, socket description, etc).
Tools needed:
- Oil pressure sensor. I got mine from the dealership for $80
- 27mm Deep well socket with extension to reach down in there
After replacing it, I drove around for a bit, reset the DTC with my Android app and immediately displacement-on-demand (DOD) started working again. It's no longer locked in 8-cyl mode.
