1. Turn the engine off and allow it to cool down.
2. Locate the ECM (Engine Control Module). It is usually located in the engine compartment, near the battery.
3. Disconnect the negative battery cable.
4. Wait 10 minutes for the ECM to reset.
5. Reconnect the negative battery cable.
6. Start the engine and let it run for a few minutes.
7. Check the ECM for any error codes. If there are no error codes, the ECM has been successfully reset.
If the ECM still displays the camshaft valve exhaust signal too low error code after following these steps, you may need to have the ECM replaced.