Guys ... I need your help. I want to know why my SES light is always on. I've had this light since I added a set of headers, high flow cats, and GMMG exhaust system. Any idea how I can get rid of it? I've had my car checked out and everything appears to be fine except for the light constantly staying on.

 

You need to get the code(s) scanned and then post them, along with some more info on your car (year, other mods, etc.).

 

I am willing to bet that 1 or 2 of the codes is a 135 or a 155...I think that you have a bad connection with an 02 sensor or you have a bad one. Are you running simms? Are these longtube headers?

 

P0130 (M) 1/1 O2 Sensor Heater Circuit Malfunction Oxygen sensor heater element malfunction.
P0131 (M) 1/1 O2 Sensor Shorted To Ground Oxygen sensor input voltage maintained below normal operating range.
P0132 (M) 1/1 O2 Sensor Shorted To Voltage Oxygen sensor input voltage maintained above normal operating range.
P0133 (M) 1/1 O2 Sensor Slow Response Oxygen sensor response slower than minimum required switching frequency.
P0134 (M) 1/1 O2 Sensor Stays at Center Neither rich or lean condition is detected from the oxygen sensor input.
P0135 (M) 1/1 O2 Sensor Heater Failure Oxygen sensor heater element malfunction.
P0136 (M) 1/2 O2 Sensor Heater Circuit Malfunction Oxygen sensor heater element malfunction.
P0137 (M) 1/2 O2 Sensor Shorted To Ground Oxygen sensor input voltage maintained below normal operating range.
P0138 (M) 1/2 O2 Sensor Shorted To Voltage Oxygen sensor input voltage maintained above normal operating range.
P0139 (M) 1/2 O2 Sensor Slow Response Oxygen sensor response slower than minimum required switching frequency.
P0140 (M) 1/2 O2 Sensor Stays at Center Neither rich or lean condition is detected from the oxygen sensor.
P0141 (M) 1/2 O2 Sensor Heater Failure Oxygen sensor heater element malfunction.
P0143 (M) 1/2 O2 Sensor Shorted To Ground Oxygen sensor input voltage maintained below normal operating range.
P0144 (M) 1/2 O2 Sensor Shorted To Voltage Oxygen sensor input voltage maintained above normal operating range.
P0145 (M) 1/2 O2 Sensor Slow Response Oxygen sensor response slower than minimum required switching frequency.
P0146 (M) 1/2 O2 Sensor Stays at Center Neither rich or lean condition is detected from the oxygen sensor.
P0147 (M) 1/2 O2 Sensor Heater Failure Oxygen sensor heater element malfunction.
P0151 (M) 2/1 O2 Sensor Shorted To Ground Oxygen sensor input voltage maintained below normal operating range.
P0152 (M) 2/1 Sensor Shorted To Voltage Oxygen sensor input voltage maintained above normal operating range.
P0153 (M) 2/1 Sensor Slow Response Oxygen sensor response slower than minimum required switching frequency.
P0154 (M) 2/1 Sensor Stays at Center Neither rich or lean condition is detected from the oxygen sensor.
P0155 (M) 2/1 O2 Sensor Heater Failure Oxygen sensor heater element malfunction.
P0157 (M) 2/2 O2 Sensor Shorted To Ground Oxygen sensor input voltage maintained below normal operating range.
P0158 (M) 2/2 O2 Sensor Shorted To Voltage Oxygen sensor input voltage maintained above normal operating range.
P0159 2/2 Sensor Slow Response Oxygen sensor response slower than minimum required switching frequency.
P0160 (M) 2/2 Sensor Stays at Center Neither rich or lean condition is detected from the oxygen sensor.
P0161 (M) 2/2 O2 Sensor Heater Failure Oxygen sensor heater element malfunction.

 

Who checked the car out?

If it was a shop they should have scanned the PCM and told you what code you were getting to cause the SES light.....