I have checked the fuel pressure at the rail. It was around 60 psi. And when monitoring it while driving with the scan to it is around 57 to 58 psi. The long term fuel trim will shoot up to 18 on the initial throttle response, if you keep it lightly feathered it gradually increases up to 24.2 and will store a code. If you quickly throttle it and let go in that fashion or if you accelerate faster it won’t go high. On bank 1 it stays below 10 no matter the driving style. I will monitor the pressure at the initial throttle and see if it drops but I haven’t seen it do that before.
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- P0174 2012 Camaro (occurs when feathering gas to maintain speed)