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P0238 is an ELECTRICAL code. P1249 is an "Overboost" code.

P0238 is either "Damaged MAP Sensor", "MAP Signal Circuit Short to Power or VREF" or "Faulty PCM".

If you have a good scantool (like AutoEnginuity or other) that can run KOEO tests, do the following:

1. Clear Codes
2. Disconnect MAP Sensor Electrical Connector
3. Key On / Engine Off
4. Run KOEO On Demand Self Test

If the P0238 returns, the problem is in the wiring or PCM. If no code returns, replace the MAP sensor.
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