Gasoline smell fom volvo s60,no leaks noticed

your not in limp mode , you have a leaking fuel line, it causing low fuel pressure to the motor

Hi Ed.
this is all i could find at the moment.
Gas Cap Causing Gasoline Smell in Car. I know it may seem obvious, but a loose or missing gas cap can cause a fuel smell in your vehicle. You could even have a faulty gas cap that is leaking fumes. A faulty gas cap can also cause the check engine light to illuminate with a DTC on newer cars.

Gasoline Smell in Car, 5 Common Causes - Simple Car Answers

or go to this link and read up some more.
Smelled gas and check engine light came on Google Search

It doesn't matter if the exhaust is leaking if the car won't start. The smell... does it smell like gasoline? If you have a new alternator and battery, then I would focus on the fuel system. Fuel pump, fuel injector, leaking fuel line, bad spark plugs, bad distributor cap, bad spark wires, oxygen sensor, etc.

Check and/or replace the gas gap and try again.

take it somewhere with a lift. pay them a few bucks to put it up in the air and look for wet spots. touch the wet spots and sniff your finger, eventually one of those wet spots will smell like gasoline, follow the wet spot to its source and there you go. most likely a gas tank thing, filler tube, rusted spot on tank leaking, leak in the fuel line, etc. it is a fuel injected car, high pressure, so if leak is on the engine side of the fuel pump when it goes it will be a mess and a fire hazard. it is nearly 10 years old so you might want to just drop the tank and replace the fuel pump anyway if you are looking at any serious labor.

The stock Bosch fuel pump is located in the fuel tank and can be accessed by removing the rear seat. Certain models have been recalled due to cracked flanges, permitting fuel to leak. If you smell gasoline inside or outside the vehicle or see wet fuel lines underneath the vehicle, contact your local Volvo dealer immediately. See below:
RECALL: 2001-2004 Volvo V70 NHTSA Campaign Number: 09V483000 www.nhtsa.dot.gov
Manufacturer VOLVO CARS OF N.A. LLC. Recall Date: DEC 17, 2009 Potential Number Of Units Affected: 136100 Description FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP Summary VOLVO IS RECALLING CERTAIN MODEL YEAR 2001-2005 S80, MODEL YEAR 2001-2004 V70, S60, XC70 AND MODEL YEAR 2003-2005 XC90 VEHICLES SOLD IN OR REGISTERED IN THE STATES OF ALABAMA, ARIZONA, ARKANSAS, CALIFORNIA, FLORIDA, GEORGIA, HAWAII, KENTUCKY, LOUISIANA, MISSISSIPPI, NEVADA, NEW MEXICO, NORTH CAROLINA, OKLAHOMA, SOUTH CAROLINA, TENNESSEE, TEXAS, UTAH, VIRGINIA AND THE U.S. TERRITORIES. WHEN EXPOSED TO CERTAIN ENVIRONMENTAL CONDITIONS (HOT CLIMATE AND TEMPERATURE CYCLING) OVER TIME AND IN COMBINATION WITH VARYING FUEL QUALITY, THE FUEL PUMP CAN DEVELOP CRACKS IN THE FUEL PUMP FLANGE. Consequence IF THE CONDITION OCCURS VEHICLE OWNERS MAY NOTICE FUEL SMELL AND/OR FUEL LEAK WHICH, IN THE PRESENCE OF AN IGNITION SOURCE, COULD RESULT IN A FIRE Remedy DEALERS WILL INSPECT THE FUEL PUMP INSTALLED IN THE VEHICLE, AND IF NECESSARY REPLACE THE FUEL PUMP WITH A PART OF A MODIFIED DESIGN. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING JANUARY 2010.

how are the plug wires, boosted engine's suffer from voltage leaks in even fairly new plug wires, the added cylinder pressure makes the spark plug require allot more voltage before it can fire compared to normally aspirated engine.

I had this Problem on my S-10 it was a bad fuel injector, the problem was when i looked for the leak it would evaporate quickly, use a flash light and look at each of your fuel injectors as soon as you turn of the car. If you do it yourself it is an easy fix, mine cost 12 dollars and about an hour to replace.

It is probably your fuel pump. I have the same car, and smelled gas for a while, even had trouble starting car when I was low on gas. Volvo has an extended warranty for this part, so it was replaced for free at a dealership.

The fuel pump is bad.