Ses Codes, Help!
09-11-2007, 08:41 AM
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Ses Codes, Help! I went and got the codes read on my 2001 Trans Am. The codes are P0420 and P1258. AutoZone gives you a printout explaining what the definition.
P1258 Definition
Engine metal over temperature protection
Explanation
ECM detected the temperature was over 270f for 10 seconds
Probable Causes
1.-Failed ECT sensor- Open circuit
2.-Poor connection at the ECT sensor
3.-Open electrical circuit
P0420 Definition
Catalyst efficiency low-bank 1
Explanation
The oxygen sensors monitor the catalytic converters
Ability to store oxygen.
Probable Causes
1.-Catalytic Converter defective (Failure possible
Due to #2, 3, or 4)
2.-Engine misfire or running condition
3.-Large vacuum leak
4.-Engine oil leakage in the exhaust-valve guide seals, piston rings.
My question is I want to have the fixed I don't have the capacity to do it myself and I don't want to get ripped out. Base on my prior posts in this forum I explained the history of the car since I had it. I stepped on it one time and shortly after the temperature went to the red and I pulled over until it cooled down and drove it bad home less than a mile away. It never did it again. I tell it has a misfire, at night when the lights are on you can see them blinking. The voltage gauge is steadily showing 13+. Like I said in one of my prior post the A/C was blowing normal Air while the car was sitting and soon as you drive Cold Air. Attempted to drive to work turned on the A/C and no Cold Air. After 20 miles that when the Service Engine Light came on. I just don't want to take the car to get repair and they tell me it's the Catalytic Converters and I buy this and then they tell me it's a Vacuum Leak.
The car has no smoke at all 61,400 miles. Any help would be appreciated.
P1258 Definition
Engine metal over temperature protection
Explanation
ECM detected the temperature was over 270f for 10 seconds
Probable Causes
1.-Failed ECT sensor- Open circuit
2.-Poor connection at the ECT sensor
3.-Open electrical circuit
P0420 Definition
Catalyst efficiency low-bank 1
Explanation
The oxygen sensors monitor the catalytic converters
Ability to store oxygen.
Probable Causes
1.-Catalytic Converter defective (Failure possible
Due to #2, 3, or 4)
2.-Engine misfire or running condition
3.-Large vacuum leak
4.-Engine oil leakage in the exhaust-valve guide seals, piston rings.
My question is I want to have the fixed I don't have the capacity to do it myself and I don't want to get ripped out. Base on my prior posts in this forum I explained the history of the car since I had it. I stepped on it one time and shortly after the temperature went to the red and I pulled over until it cooled down and drove it bad home less than a mile away. It never did it again. I tell it has a misfire, at night when the lights are on you can see them blinking. The voltage gauge is steadily showing 13+. Like I said in one of my prior post the A/C was blowing normal Air while the car was sitting and soon as you drive Cold Air. Attempted to drive to work turned on the A/C and no Cold Air. After 20 miles that when the Service Engine Light came on. I just don't want to take the car to get repair and they tell me it's the Catalytic Converters and I buy this and then they tell me it's a Vacuum Leak.
The car has no smoke at all 61,400 miles. Any help would be appreciated.
