Awasome Can Wrong Oil Cause Check Engine Light Ideas. When the electrical harness is loose, frayed, damaged, or exposed, it can send a signal to the ecu and mimic a mechanical problem. Web most often, the check engine light comes on after an oil change because the dipstick isn’t seated correctly or the oil fill cap is on backward.
It looks like a tiny oil can. Both of these might cause excess oil in the engine bay which would burn and possibly cover some sensors. In reality, your oil level has its own dedicated dashboard icon;
