It's possible that the ECU (Engine Control Unit) may have been damaged when you switched the battery terminals on your Citroen Xsara Picasso, but it's also possible that the issue is related to the configuration of the ECU.
The P1613 error code typically indicates a fault in the configuration of the ECU, which can be caused by a variety of factors, including a dead battery, a faulty ECU, or improper programming.
Before replacing the ECU, it's a good idea to try resetting the ECU to its default settings. Here are the steps to follow:
- Disconnect the battery and wait for at least 30 minutes.
- Reconnect the battery and turn on the ignition.
- Wait for a few minutes before starting the engine.
If resetting the ECU does not resolve the issue, then it's possible that the ECU has been damaged and may need to be replaced. However, it's important to have the issue diagnosed by a qualified mechanic before replacing the ECU, as there may be other factors that are contributing to the problem.
If you do need to replace the ECU, it's important to ensure that the new ECU is properly programmed for your specific vehicle, as failure to do so can cause further issues with the vehicle's performance. A qualified mechanic or dealership should be able to assist with the replacement and programming of the ECU.
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