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05 granite e-7 aset iegr 2-3 blink code



I have a 05 e-7 iegr engine with a 2-3 blink code. FMI 5. I need some help. I have replaced the IAT sensor. The wiring harness is new about 10 months ago. I followed the diagnostic tree for the code and it went away for a couple of days. Now it intermittently comes back on and goes back off. When the lightning bolt comes on the engine fan stays engaged. The plugs look good at the sensor and the ecm. So do the pins. What am I missing?

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