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The P1457 is a Leak detected in the Evap and is usually caused by not getting the fuel cap tight after refueling, it is nothing to worry about and will probably go away. You can reset/clear the codes by removing the negative battery cable for 5 minutes.
- Missing Fuel cap- Incorrect fuel filler cap used- Fuel filler cap remains open or fails to close- Foreign matter caught in fuel filler cap
The P706/706 is the Transmission Range Sensor circuit. Are you having any problems with the shifting or shift indicator?