2003 Chevy Tahoe check engine lite

Tiny
JRAD187
  • MEMBER
  • 2003 CHEVROLET TAHOE
  • V8
  • 4WD
  • AUTOMATIC
  • 71,000 MILES
I just recenty had my truck in 4 service they fixed a 02 sensor on the rft and the codes were po132 and po175 they also put in some fuel stabilizer I keep getting code po175 running to rich what could be causing this and how do I fix thanks
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Monday, December 3rd, 2007 AT 10:28 PM

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Tiny
RASMATAZ
  • MEMBER
P0175

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
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Monday, December 3rd, 2007 AT 11:52 PM

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