Check Engine Light and Harsh Shifting on Toyota Corolla

The 2005-2008 Toyota Corolla 1.8L I4 models have issues with the circuit board in the electronic control module (ECM) cracking. There is no advanced warning for the issue, and when it occurs drivers will experience:

• Harsh shifting
• Possible check engine light
• Engine stalling while driving

Toyota issued a recall for this issue, and notes the need to replace the ECU if this problem occurs.