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Thread: code 174 Heated O2 sensor
04-17-2010, 09:12 PM #1
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- Apr 2010
code 174 Heated O2 sensor
Great info on the site, on heated O2 sensors which code 174 is about.
My diagnostic, PO174 says failed heated oxygen sensor, Bank 2 sensor 1.
What side is Bank 2? Is this sensor before the cat converter?
2003 Suburban 4X4 1500
04-17-2010, 09:59 PM #2
code 174 heated o2 sensor
Bank 2 is passenger side and sensor 1 is before cat.
04-17-2010, 11:59 PM #3
Just make sure you actually get the passanger side pipe, they do cross around underneath a little, but yes position 1 is pre cat and position 2 is post cat99 K1500 Suburban LT "THE BEAST"
Hypertech III, K&N, true dual
04-18-2010, 11:32 AM #4My diagnostic, PO174 says failed heated oxygen sensor, Bank 2 sensor 1.
Your strategy for diagnosing these things depends on you. Some prefer to troubleshoot by the book, which means not replacing anything until they feel like they've found the real cause of the code. Others, especially with O2 sensor codes, prefer to replace the O2 sensor as a "guess," and, if that doesn't resolve the issue, then go through the more detailed process of diagnosing the real fault.'98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
'92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
"My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World
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