2002 Chevy Tahoe Codes P0174 and P0300

2002 CHEVROLET TAHOE
141,000 MILES • 6 CYL • 2WD • AUTOMATIC
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HACKDADDY
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Initially I received codes for my oxygen sensors, I replace both of those on the bank 2 side. But, now I am getting codes 174 and 300 and the car is blowing black soot and smoking. I checked MAF sensor and it is working fine. Any suggestions?
Sep 1, 2010 at 8:58 AM
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RASMATAZ
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Lean fuel condition could be caused by one of the following below:

1.Vacuum leaks
2.EGR and PCV valve.
3.Low fuel pressure.
4.Dirty fuel injectors.
5.Mass Air Flow Sensor.
6.Oxygen Sensor.
Sep 4, 2010 at 6:35 AM
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DRUE
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[quote:c8de4cd3e3="hackdaddy"]Engine Performance problem
2002 Chevy Tahoe 6 cyl Two Wheel Drive Automatic 141000 miles

Initially I received codes for my oxygen sensors, I replace both of those on the bank 2 side. But, now I am getting codes 174 and 300 and the car is blowing black soot and smoking. I checked MAF sensor and it is working fine. Any suggestions?[/quote:c8de4cd3e3]

I know exactly what this is! I also have a 2002 Tahoe. I got the same readings and it was the catalitic converter! It had to be replaced and that fixed it. Glad I could help someone!
Sep 21, 2010 at 5:14 PM
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