• Register
Ask OBDII Question
Please write Make, Model and Year of your vehicle

Find local automotive repair shops in your area | AutoCodes.com Local
Need A Repair Shop?
Find local automotive repair shops in your area.
AutoCodes.com Shops

32,136 questions

17,958 answers

688 comments

20,784 users

Top Users

Reynaldo 8,293 Points
G37driver 3,517 Points
Carguy1 3,071 Points
OBDIITech 2,716 Points
OBDtech2 165 Points
corvette-78 127 Points
knowledge 1488 124 Points
Samat Bekov 117 Points
ptl 113 Points
sabtele 112 Points

P1153 Chevrolet -

this is on a 2004 silverado 2500 with a 6 liter engine
codes P0171 and P0174 also came up along with P0300

Vehicle: 2004 chevy silverado 6 liter engine
asked Jul 27, 2013 by Vince Webster

2 Answers

You may have more than one problem. I would start by checking for intake air leaks (which can also cause the P0300 code) or replacing the front (upstream) O2 sensor.

P0171 Chevrolet - Fuel Trim System Lean Bank 1

Read more: http://engine-codes.com/p0171_chevrolet.html

P0174 Chevrolet - Fuel Trim System Lean Bank 2

Read more: http://engine-codes.com/p0174_chevrolet.html

P1153 Chevrolet - HO2S Insufficient Switching Bank 2 Sensor 1

Read more: http://engine-codes.com/p1153_chevrolet.html

 

 

answered Jul 27, 2013 by OBDIITech (2,716 points)
P1153 H02S (oxygen sensor) bank 2 sensor 1

P0171 Fuel trim lean bank 1

P0174 fuel trim lean bank 2

P0300 Random misfrie

Lean condition are mainly caused by vacuum leaks, low fuel pressure, MAF (mass air flow) The vacuum leak can come from a EGR valve that is partially open,  Vacuum leak from the PCV valve or even at the plenum and intake manifold gasket, As for the fuel pressure the specification are 55-62 psi with key on and engine off,
answered Jul 27, 2013 by Reynaldo (8,293 points)

Related questions

0 answers
1 answer
Home - About AutoCodes.com - Privacy Policy - Terms and Conditions - Copyright 2010-2016 AutoCodes.com

AutoCodes.com - HelpForCars.net - Infinitihelp.com - Nissanhelp.com
...