P1680

Symptoms

• Engine won't start
• Check Engine Light Is On
• Loss of engine power
• Incorrect transmission operation
• Malfunctions of the car's electronic systems

Causes

• Replacing the ECU without further programming
• Failure when updating ECU firmware
• Control module power problems
• ECU memory damage
• Software incompatibility

How to Fix

1. Check battery voltage and ECU power supply circuit
2. Read all error codes using a diagnostic scanner
3. Try to reflash the ECU using dealer software
4. If necessary, replace the control module
5. Perform adaptation and calibration of systems after programming

Related codes

Error P1680 by Vehicle Brand