Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, P0171 code in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; So after fighting this code off finally a month ago. Yesterday it reappeared then went away later in the evening. ...
- 09-23-12 11:00 AM #1
So after fighting this code off finally a month ago. Yesterday it reappeared then went away later in the evening. Anyone have any guesses on this issue. I have new Maf sensor air filter new 02 sensors and no vacuum leak.
- 09-23-12 01:05 PM #2
Re: P0171 code
worth checking for a small exhaust gas leak on your exhaust on bank 1 side between the sensors, also worth having injectors cleaned.
when was last time fuel filter was done?
- 09-23-12 02:00 PM #3
Fuel filter not sure not since I've owned it been a year now and I had the injectors cleaned a few months ago along with throttle body.
- 09-23-12 05:08 PM #4
Re: P0171 code
Id go with a new filter and see how it goes
+ Reply to Thread
Gear in this thread - Powered by O'Reilly Auto Parts
- PowerTorque Tools - SAE & Metric Socket Set
SAE & Metric Socket Set - 50 Piece; 3/8 Inch Drive
- PowerTorque Tools - Metric Hex Bits Set
Metric Hex Bits Set - 7 Piece; 3/8" Drive; Metric; Metric Hex Bits; Contains: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm & 10mm
- PowerTorque Tools - Stubby Star Bits Socket Set
Stubby Star Bits Socket Set - 10 Piece; 1/4" & 3/8" Drive; Star Stubby Bit Socket Set; Contains: 1/4" Drive: T-10, T-15, T-20, T-25, T-27 & T-30,3/8" Drive: T-40, T-45,T-47 & T-50