Bosch · ECU Troubleshooting
This error means that the electrical circuit used to control an actuator (drive circuit 1) has a short circuit to ground. This can cause the actuator to malfunction or fail.
Click steps to track your progress.
Inspect the wiring harness for actuator 1 for any chafing or damage.
Check the actuator itself for any signs of damage or seizure.
If wiring and actuator are okay, the ECU's drive circuit may be shorted.