Why does my oil light come on when car idle at low rpm?

Question

Code is p0456 on mitsubishi galant 2008

Answer 1

there is probably no oil pressure, check the oil level. If you have not replaced the oil in 4k miles replace the oil.

if you still have the problem replace the oil pressure sensor.

P0456 is a different problem related to the EVAP system, make sure the gas cap is tight. If the problem still comes back the first thing to do is replace the gas cap with a factory one.

 

Possible causes

- Missing or loose fuel cap

- Incorrect fuel filler cap used

- Fuel filler cap remains open or fails to close

- Foreign matter caught in fuel filler cap

- Evaporative Emission (EVAP) canister or fuel tank leaks

- Evaporative Emission (EVAP) system hose leaking

- Fuel tank leaking

https://www.autocodes.com/p0456_mitsubishi.html