What are the symptoms of a defective electronic control module on a Suzuki Verona?

Symptoms of a defective electronic control module (ECM) in a Suzuki Verona can include erratic engine performance, stalling, or difficulty starting the vehicle. The check engine light may illuminate, and you may experience issues with fuel efficiency or transmission problems. Additionally, there could be irregularities in sensor readings, causing the vehicle to operate poorly or fail to meet emissions standards.