0 like 0 dislike
384 views
by
I had a p0306 eror then the code p0521 came on. The oil pressure drops when idle and cold. Stays 20-40 going down the road per instrument gauge. Started to burn oil now. Replaced the coil pack and plug on cylinder 6. Still have both codes. Would these be related or just a fluke they both occurred together?
Vehicle: 2005 GMA Envoy 5.3

1 Answer

0 like 0 dislike
by (13.5k points)

Hi there,

There are several possible causes for a cylinder misfire. Here is a list for you.

P0306 GMC - Cylinder 6 Misfire Detected

Read more: https://www.autocodes.com/p0306_gmc.html

The code P0521 indicates an issue with the engine oil pressure sensor. Here is a list of possible causes.

P0521 GMC - Engine Oil Pressure Sensor/Switch Circuit Range/Performance

Read more: https://www.autocodes.com/p0521_gmc.html

Related questions

0 like 0 dislike
1 answer 240 views
0 like 0 dislike
0 answers 144 views
asked Jan 3, 2018 by aleida

36.2k questions

32.2k answers

1.3k comments

22.8k users

Need A Repair Shop?
Find local automotive repair shops in your area.
Does your car have Safety Recalls? → Check here
...