I have a 2018 Silverado 5.3 with 75k miles. Truck runs great but P2099 code Post Catalyst Fuel Trim System Too Rich (Bank 2 comes and goes. Have already cleaned MAF sensor, replaced O2 sensors (all 4) and recently replaced all 8 fuel injectors. Here is the freeze frame data.
DTCFRZF
P2099
FUELSYSI
CL
FUELSYS2
CL
LOAD_PCT(%)
21.6
ETC(°С)
58
FRP(kPa)
309
MAP (kPa)
27
RPM(/min)
1302
VSS(km/h)
22
SPARKAD(*)
42
IAT(*C)
30
MAF(g/s)
12.41
TP(%)
22.4
02B1S1(V)
3.9
02B151 (V)
0.095
02B152(V)
99.2
02B152(V)
0.725
02B351(V)
1.6
02B351(V)
0.075
02B352(V)
99.2
02B352(V)
0.580
RUNTM(sec)
204
FRP(kPa)
5210.0
EVAP_PCT(%)
15.7
FLI (%)
44.7
WARM_UPS
3
Any diagnostics that I can do?
