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Hello, I'm having trouble with my S197 2006 V6 mustang as all four O2 sensors are stuck on rich and coupled with this is the fact that it runs horribly and spews unburned gas and carbon particles from both exhaust pipes (aftermarket).

I've replaced the spark plugs, both upstream O2 sensors, coil pack, spark plug wires, fuel pressure regulator, MAF sensor, fuel injectors, & cleaned all of the sensor pins and connectors with electrical cleaning spray including the PCM.

The freeze frame data provided was while the car was idling with the foot off of the throttle:
DTCFRZF: P2196
FUELSYS1: OL_FAULT
FUELSYS2: N/A
LOAD_PCT(%): 32.5
ETC(°F): 131
SHRTFT1(%): 0.0
LONGFT1(%): 0.0
SHRTFT2(%): 0.0
LONGFT2(%): 0.0
MAP(inHg): 10.9
RPM(/min): 1055
VSS(mph): 0
SPARKADV(°): 7
IAT(°F): 68
MAF(lb/min): 1.314
TP(%): 15.7
O2B1S1(V): 1.020
SHRTFTB1S1(%): 0.0
O2B1S2(V): 0.900
O2B3S1(V): 1.015
SHRTFTB3S1(%): 0.0
O2B3S2(V): 1.000
RUNTM(sec): 44
FRP(PSI): 38.4
EGR_PTC(%): 0.0
EGR_ERR(%): 0.0
EVAP_PCT(%): 0.0
FLI(%): 28.2
WARM_UPS: 0
CLR_DIST(mile): 0
EVAP_VP(inH20): -0.068
BARO(inHg): 30.1
CATEMP11(°F): 976.10
CATEMP21(°F): 976.10
VPWR(V): 14.220
LOAD_ABS(%): 26.7
EQ_RAT: 0.999
TP_R(%): 3.5
AAT(°F): 63
TP_B(%): 21.6
APP_D(%): 18.8
APP_E(%): 29.4
APP_F(%): 18.0
TAC_PCT(%): 5.5
 

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