My check engine light has been on and off for awhile and at first there is only one code (P0420). And since it didn't' affect performance of the car, I didn't pay too much attention to it.
Now my check engine light is on again and it stays on for almost a month. I know there must be some more serious problems and have the code scanned again. This time I found four codes (P0420 appears twice):
P1167 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction
P1162 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Slow Response
P0420 Catalyst System Efficiency Below Threshold
It looks like I have a bad A/F sensor heater (P1167) and because of this, the sensor has slow response (P1162). I searched this forum and didn't find any posting about these two codes. Could anybody tell me what is the problem or at least where is this sensor/heater?
The two P0420s probably mean I have both catalyst converters failed. I will try to correct them after I fix the more serious problem.
Please help me!
Now my check engine light is on again and it stays on for almost a month. I know there must be some more serious problems and have the code scanned again. This time I found four codes (P0420 appears twice):
P1167 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction
P1162 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Slow Response
P0420 Catalyst System Efficiency Below Threshold
It looks like I have a bad A/F sensor heater (P1167) and because of this, the sensor has slow response (P1162). I searched this forum and didn't find any posting about these two codes. Could anybody tell me what is the problem or at least where is this sensor/heater?
The two P0420s probably mean I have both catalyst converters failed. I will try to correct them after I fix the more serious problem.
Please help me!