Answer
Apr 19, 2024 - 03:30 PM
Hi there,
If you encounter the "reduced engine power" warning in your 2007 Cadillac STS Northstar 4.6L. It indicates a system failure affecting your vehicle's performance. Here are steps that you can do to try to clear the fault or warning:
1. Turn off the engine and remove the key from the ignition. Wait for 10 to 15 minutes.
2. Disconnect the negative battery terminal from the battery and ensure it does not come in contact with any metal surface.
3. Reconnect the negative battery terminal carefully, and tighten the bolt or nut.
4. Start the engine and check if the "reduced engine power" warning/message is still displayed. If the warning does not show, you may have temporarily reset the system. If the warning comes back shortly, your vehicle requires further diagnosis and troubleshooting to find the source of the problem. Check with your trusted local auto repair shop afterward.
I hope this helps!
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