LS1-Mike

Could a bad O2 sensor trigger p0174 dtc? My o2 sensor read out stays steady at around 445 mV on passenger side at all throttle inputs, idle, part throttle and wot

LS1-Mike

I also threw two other codes p0151 and p0446.

LS1-Mike

Checked pcv hose for damage but did not see anything obvious for vacuum leak. Will try to get fuel pressure gauge as well to check fuel pressure. Anyone had this problem with a bad o2 sensor?

2xLS1

iTrader: (25)

You have a dead o2 sensor, setting a low voltage code for that O2 sensor, and you wonder what the problem might be?

LS1-Mike

If you don't have something intelligent to contribute how about you keep your smart *** comments to yourself pal

2xLS1

iTrader: (25)

My reply was very intelligent. Looks like you need help seeing the obvious.

TomM

iTrader: (56)

Here are possible problems that may cause your codes...

P0446..
https://www.yourmechanic.com/article...pencer-clayton

P0151...
https://www.yourmechanic.com/article...by-jay-safford

P0174...
https://www.yourmechanic.com/article...-blake-griffin

The P0174 points to a lean condition and mentions evap. system also....there are several contributing factors....

Did anything change on the car, start running rough, running rich etc....

T,

JackArse32

i was concerned about my o2 sensors too. i'm getting lean in bank one and two. air filter is clean, not a k&n, so not oiled (though i will get one at some point)

I don't notice anything otherwise from the engine, just the check engine light.