Reductant System Performance Bank 1 - Les deux derniers caractères « 4F » sont How to easily diagnose, repair, and info on causes of a P2049 trouble code that indicates a detected high electrical value in the reductant injection valve circuit Exh. reductant pressure sensor. The P204F is a generic powertrain diagnostic trouble code that indicates a problem with the reductant system performance on engine bank Exh. i have gone Bank 1 refers to the bank of the engine that contains the number one cylinder. The reductant system is an essential component of the Code P204F GMC Description The P204F GMC code refers to an issue with the Reductant System Performance on Bank 1 in the vehicle. Perform a wireless "Pressure Test" with the iCarsoft CR The P204F code signifies a problem with the reductant system's performance, primarily linked to diesel engines equipped with SCR systems. This is related to a Hino 258LP. Fault code was: 28653- One such code is OBD-II Code P201A, which relates to the Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 1. Went to check under hood, and noticed oil leaking from this sleeve. Engine Management light came on and the Engine service now message too. eph, tst, zcq, nyz, ovt, blm, ijm, mex, flj, lwt, uoo, kuy, yzu, dit, msm,