Diesel Fuel Damage to Gasoline Engine

tomtThis weekly feature for Warranty Direct about car repair and maintenance is written by Tom Torbjornsen, the popular host of America’s Car Show on satellite radio. Below are some recent Q&A from the America’s Car Show email bag.

Dear Tom,
Two weeks ago I inadvertently filled my 2004 Toyota Camry’s gas tank with half a tank of diesel fuel. The dealer drained and cleaned the tank and replaced the spark plugs and air filter. The day after I got the car back, the “check engine light” came on, and the dealer said the catalytic converter was gummed up and should be replaced, along with the oxygen sensors. I haven’t had this work done yet. Is it necessary since the car is running well (and there is no rotten-egg smell)? It would cost me over $2,000. Yikes!
Patricia from Vera Cruise, CA