One problem related to catalytic convertor has been reported for the 2003 Honda Civic Hybrid. The most recently reported issues are listed below.
The contact owns a 2003 Honda Civic Hybrid. While attempting to accelerate from idle at a stop light the vehicle began to vibrate and then shut off. The check engine light illuminated intermittently prior to this failure. The dealer replaced the catalytic converter. Presently, the vehicle will start,but was not drivable. The vehicle was towed to a Honda dealer, and diagnosed as needing a new transmission. The dealer found a salvaged transmission. The current and failure mileage were 158,000.