0 like 0 dislike
654 views
by

Replaced co2 sensors. Engine runs good. 80000 mi.

Vehicle: 2004 Chevy 1500 5.3 Silverado plckup

1 Answer

0 like 0 dislike
by (13.5k points)
P0171 Fuel system lean Bank 1

The most common causes are vacuum leaks, low fuel pressure , MAF (mass air flow) under reporting, Also what needs to be included is sparkplug.

Related questions

0 like 0 dislike
1 answer 433 views
0 like 0 dislike
1 answer 1.9k views
0 like 0 dislike
1 answer 420 views

33.7k questions

32.5k answers

1.3k comments

23.0k users

Need A Repair Shop?
Find local automotive repair shops in your area.
...