I had all three parts that were mentioned replaced on my car under its extended warranty. I have not seen either light come on and have had the repairs for 6 months. When I asked the guy at the dealership about the casue, he mentioned that it can occur from overfilling the gas tank. Meaning not stopping after the "click" at the pump. I used to fill it just a little more after th click and then the problem started happening. I have not filled it up after th clcik again, and no problems.