P0150, p0174 & p1174

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Mar 3, 2015 | 03:28 PM

cammyr01

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From: Valley Center, CA

P0150, p0174 & p1174

Just got my codes read. Looks like time to replace the O2 sensors? Any help determining what to do next is appreciated!

Thanks, Cammy

Mar 3, 2015 | 04:17 PM

sdhow

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Check for vacuum leaks. If you disconnected any during the upper intake R&R, you may have a leak. It can throw codes like these. Live data scanner is the only sure way to check the condition of your O2 sensors.

Mar 6, 2015 | 05:13 PM

cammyr01

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From: Valley Center, CA

I will do vacuum test. If there are no air leaks, do 174 & 1174 indicate front O2 sensors need replacement??

Mar 6, 2015 | 08:42 PM

sdhow

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Quote:

Originally Posted by cammyr01

I will do vacuum test. If there are no air leaks, do 174 & 1174 indicate front O2 sensors need replacement??

Live data scanner is the only sure way to check the condition of your O2 sensors. With one of these, you check the output voltage of each sensor while the engine is running. Anything else is a guess.