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CEL, VSA light - continued.
- AutoZone's reader indicated an engine misfire, cylinders 3 and 6 and suggested several things, including: Vacuum leak, ignition problem, bad gas, engine problem.
The engine drove perfectly to AutoZone. The VSA and Triangle did not come back on for the trip, but the CEL stayed displayed. Car drove fine back home. I then removed the ECM fuse (fuse box under hood) for several minutes to reset the CEL and any stored codes. Have drove about 25 miles since. No CEL light so far. Car running perfectly. I THINK the problem was related to "over filling" the gas tank and letting it sit in a warm garage (daytime temp 85 degrees). My point is not ALL P0306 codes are such a big deal. Reset by removing the fuse and see if it comes back before taking it in for an expensive visit to the dealer.May 2014
CEL, VSA light. Triangle light. 2010 V6 EXL. About 65K miles. Very well maintained. Garage kept.
Recently, I started the engine after sitting idle for 2 days. Engine ran VERY rough which is quite unusual. I drove it a short distance and the Check Engine Light came on followed by the VSA light and the Triangle with ! mark. I drove back home and switched cars for that trip rather than risk getting stranded.
I thought about what had recently preceded the symptoms and recalled that I had topped off the gas tank using fresh, quality (Shell regular) gas that I normally use for the lawn mower. I knew that the tank was very nearly full but it was NOT at the top of the filler neck. I tightened the gas cap completely after topping off the tank. When, I returned home a few hours later, I opened the gas tank just to see if I heard a "whoosh" or that the tank might be under extra pressure. I heard nothing and replaced the gas cap using the normal 3 clicks.
Took to Autozone to get CEL code: P0306May 2014