Issue. PO1273 bank one circuit lean
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Issue. PO1273 bank one circuit lean
2005 g35 Infiniti
I have tried everything 4 oxygen sensors in bank 1 . Pcm replaced used, one pcm repairs made to I chip. Idle relearn. New throttle body, new map sensor, new fuel injectors. New cats. New exhaust manifold gaskets. Pressure regulators It leads me to think there’s a short in the oxygen connector itself? Has anyone has this issue before?it only on the passenger side
I have tried everything 4 oxygen sensors in bank 1 . Pcm replaced used, one pcm repairs made to I chip. Idle relearn. New throttle body, new map sensor, new fuel injectors. New cats. New exhaust manifold gaskets. Pressure regulators It leads me to think there’s a short in the oxygen connector itself? Has anyone has this issue before?it only on the passenger side
Last edited by Double007; Jun 12, 2021 at 10:16 PM. Reason: Did not add year make and model
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Joined: May 2017
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Have you tried replacing the spark plugs, I know it sounds odd but they have a dramatic effect on cylinder burn conditions and I've seen lean codes from a fouled set of plugs.
If a new set of plugs doesn't fix it smoke test the intake and exhaust for leaks, either can cause that code but I have a suspicion the plugs will fix it.
If a new set of plugs doesn't fix it smoke test the intake and exhaust for leaks, either can cause that code but I have a suspicion the plugs will fix it.
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