Hi, I have a 2011 Cadillac Escalade with 155000 miles on it. I have occasionally smelt a rotten egg smell and the engine has been running a little rough. I purchased a BAFX Bluetooth OBD2 scan tool - For check engine light & diagnostics. I think I need to replace an o2 sensor but im not sure. The results are below.

Mode $06 report generated by Torque for Android
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Vehicle VIN: 1GYS4BEF9BR283805
Vehicle Manufacturer: Unknown
Vehicle Calibration ID: 126

Test report:
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MID:$01 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 1
Max: 120ms Min: 0ms
Test result value: 31ms
PASS
----
MID:$01 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 1
Max: 120ms Min: 0ms
Test result value: 21ms
PASS
----
MID:$01 TID:$80
- O2 Bank 1 Sensor 1
Max: 65,535Changes Min: 40Changes
Test result value: 94Changes
PASS
----
MID:$01 TID:$81
- O2 Bank 1 Sensor 1
Max: 65,535Changes Min: 40Changes
Test result value: 97Changes
PASS
----
MID:$02 TID:$8a
- O2 Bank 1 Sensor 2
Max: 590Count Min: 0Count
Test result value: 90Count
PASS
----
MID:$02 TID:$8b
- O2 Bank 1 Sensor 2
Max: 2.04936V Min: 0.77531V
Test result value: 0.77763V
PASS
----
MID:$02 TID:$8c
- O2 Bank 1 Sensor 2
Max: 0.13993V Min: 0V
Test result value: 0.07649V
PASS
----
MID:$02 TID:$91
- O2 Bank 1 Sensor 2
Max: 0.45018V Min: 0V
Test result value: 0.27352V
PASS
----
MID:$02 TID:$92
- O2 Bank 1 Sensor 2
Max: 2.04936V Min: 0.35014V
Test result value: 0.42737V
PASS
----
MID:$02 TID:$93
- O2 Bank 1 Sensor 2
Max: 7.39 Min: 0
Test result value: 0.54
PASS
----
MID:$02 TID:$94
- O2 Bank 1 Sensor 2
Max: 7.19 Min: 0
Test result value: 0.27
PASS
----
MID:$05 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 2 Sensor 1
Max: 120ms Min: 0ms
Test result value: 38ms
PASS
----
MID:$05 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 2 Sensor 1
Max: 120ms Min: 0ms
Test result value: 25ms
PASS
----
MID:$05 TID:$80
- O2 Bank 2 Sensor 1
Max: 65,535Changes Min: 40Changes
Test result value: 83Changes
PASS
----
MID:$05 TID:$81
- O2 Bank 2 Sensor 1
Max: 65,535Changes Min: 40Changes
Test result value: 83Changes
PASS
----
MID:$06 TID:$8a
- O2 Bank 2 Sensor 2
Max: 590Count Min: 0Count
Test result value: 71Count
PASS
----
MID:$06 TID:$8b
- O2 Bank 2 Sensor 2
Max: 2.04936V Min: 0.77531V
Test result value: 0.89402V
PASS
----
MID:$06 TID:$8c
- O2 Bank 2 Sensor 2
Max: 0.13993V Min: 0V
Test result value: 0.04917V
PASS
----
MID:$06 TID:$91
- O2 Bank 2 Sensor 2
Max: 0.45018V Min: 0V
Test result value: 0.41761V
PASS
----
MID:$06 TID:$92
- O2 Bank 2 Sensor 2
Max: 2.04936V Min: 0.35014V
Test result value: 0.38381V
PASS
----
MID:$06 TID:$93
- O2 Bank 2 Sensor 2
Max: 7.39 Min: 0
Test result value: 0.35
PASS
----
MID:$06 TID:$94
- O2 Bank 2 Sensor 2
Max: 7.19 Min: 0
Test result value: 0.37
PASS
----
MID:$21 TID:$a0
- Catalyst Monitor Bank 1
Max: 0.99939 Min: 0.3498
Test result value: 0.88776
PASS
----
MID:$22 TID:$a0
- Catalyst Monitor Bank 2
Max: 0.99939 Min: 0.3498
Test result value: 0.88776
PASS
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