While driving mil code P0420 set. Ford tsb 03-24-5 indicates PCM reprogramming rather than replacement of catalytic converters required. Despite being within emissions warranty coverage period dealer charged $119 for this work, claiming emissions warranty did not cover this work. Defective programming of PCM to cause the check engine light to come on, requiring a visit to dealer. Can't pass emissions test with light on, should be against the law. In any case the reprogramming of the PCM should have resulted in no charge. This failure resulted in a mandated, due to state emissions testing, visit to dealer and a charge for service to fix a manufacturing defect. The PCM was reprogrammed, according to dealer, and currently light is off. It is very easy to program the PCM to send erroneous codes at any time, especially when out of warranty, allowing the car dealers to create a cash flow they might not otherwise have. This should be illegal!

- Saint Louis, MO, USA

While driving engine light came on and remained on. Could hear a knocking noise coming from under the hood. Had taken vehicle to dealership, and mechanic indicated it was the catalytic converter, but the problem had not been repaired.

- Hyde Park, NY, USA

Two catalytic convertors have burned out while consumer was driving vehicle. Has not contacted dealer.

- Enditopt, NY, USA