P0175 code and milage drop from 14 mpg to 12 mpg

Ruttingbull · **Joined:** Mon Jan 02, 2006 5:21 pm **Posts:** 1

2000 GMC Serria crew cab with 5.7 liter old body style. Had a P0175 come up once. The milage has droped from 14 to 12 mpg. 136K miles performed all listed and scheduled maintenance including pluggs wires. [/code]

Sponsored Links · **Joined:** 29 Jun 2004 08:12 pm **Posts:** N/A

andywho · **Joined:** Wed Jan 04, 2006 9:31 pm **Posts:** 13

p0175 system too rich, at adaptive limits.--- bank2
check the air filter and make sure its of quality and installed correctly
possible fuel pressure concern? how many miles on it now?
the other bank may be rich also just not thrown a code yet

P0175 code and milage drop from 14 mpg to 12 mpg

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