P0521 Chevrolet -

Question

I have 2011 Tahoe Hybrid, the check engine light came on and is reading a code P0521 after the code was read the engine light went off but now it goes to auto stop when it park and wont let me rev the engine. what is the possible problem and solution

Answer 1

HI there

This code is for the oil pressure sending unit. The engine won't run if this code is in the system or if there is a low oil pressure condition. Check the engine oil and make sure it's full. If it is, then usually replacing the sensor will resolve the problem. Here is some more info on the code.

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

Read more: https://www.autocodes.com/p0521_chevrolet.html