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Oil Pressure Sensor - P0521, P0522, P0523
The P0171 and P0174 codes are gone. I made sure the PCV hose was snug. The codes have not returned.- jrsherfy
- Post #9
- Forum: Engine & Drivetrain
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Oil Pressure Sensor - P0521, P0522, P0523
It appears that the oil pressure sensor was what was needed. The truck's oil pressure is hovering around 40 again. It's not dancing around any longer. This job took me a long time. I had to put on one socket piece at a time. First, I put the 1 1/16" socket head over the old sensor. Then, I...- jrsherfy
- Post #8
- Forum: Engine & Drivetrain
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Oil Pressure Sensor - P0521, P0522, P0523
Thanks for the responses. @swathdiver - Thanks for check list. I'm a bit of a rookie with multi-meter stuff. I'll give it a try. If the ECM was bad, wouldn't there be other things going wrong with the truck's instruments. @HiHoeSilver - Thanks for reminding me about the filter. That's...- jrsherfy
- Post #5
- Forum: Engine & Drivetrain
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Oil Pressure Sensor - P0521, P0522, P0523
I (really my wife) have a 2007 GMC Yukon SLT. Her oil gauge has been "dancing" around. I have a CEL with the codes listed in the post description. The needle will peg out at 80 and drop to 0. The warning message comes on when the needle drops to 0. I checked the oil and it's fine. The...- jrsherfy
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- Replies: 8
- Forum: Engine & Drivetrain
