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Custom 2007 cts
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While im driving my car this morning, engine light came on. I didnt feel any changes but i dont want to see the lights on because it makes me worried so i decided to check it. Obdll says P0420- catalyst system low efficiency bank 1, P0451- fuel tank pressure sensor performance and P0452 fuel tank pressure sensor circuit low voltage. Im thinking that probably once i change the fuel tank pressure sensor all codes will be gone. Now my question is the sensor located inside my fuel tank or is there any easy access to that sensor? This is for 2006 cts 2.8l
 
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