ls400 98 fault codes p0171 p0430
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ls400 98 fault codes p0171 p0430
Good day CL!
I need some help with my car, I have a 98 ls400 and i have been struggling with some codes. I had a P0171 code and changed my vacumm lines then it was solved. Now I have another code of P0430, i have an obd2 bluetooth dongle connected to my phone and i tried erasing my code, then after some miles of driving after I turn the car off it will have another code, the p0171. So I tried checking it a couple of times that it might be just a coincidence. But its been a week since I have both codes (p0171,p0430). And everytime I erase one other one will pop when I use the car the next trip i make. Is it a possibility of an ecu problem?
Just a heads up, I just changed my coolant temp sensor OEM, thermostat and rubber gasket (OEM), I also just did new sparkplugs.
thanks in advance!
I need some help with my car, I have a 98 ls400 and i have been struggling with some codes. I had a P0171 code and changed my vacumm lines then it was solved. Now I have another code of P0430, i have an obd2 bluetooth dongle connected to my phone and i tried erasing my code, then after some miles of driving after I turn the car off it will have another code, the p0171. So I tried checking it a couple of times that it might be just a coincidence. But its been a week since I have both codes (p0171,p0430). And everytime I erase one other one will pop when I use the car the next trip i make. Is it a possibility of an ecu problem?
Just a heads up, I just changed my coolant temp sensor OEM, thermostat and rubber gasket (OEM), I also just did new sparkplugs.
thanks in advance!
#2
Good day CL!
I need some help with my car, I have a 98 ls400 and i have been struggling with some codes. I had a P0171 code and changed my vacumm lines then it was solved. Now I have another code of P0430, i have an obd2 bluetooth dongle connected to my phone and i tried erasing my code, then after some miles of driving after I turn the car off it will have another code, the p0171. So I tried checking it a couple of times that it might be just a coincidence. But its been a week since I have both codes (p0171,p0430). And everytime I erase one other one will pop when I use the car the next trip i make. Is it a possibility of an ecu problem?
Just a heads up, I just changed my coolant temp sensor OEM, thermostat and rubber gasket (OEM), I also just did new sparkplugs.
thanks in advance!
I need some help with my car, I have a 98 ls400 and i have been struggling with some codes. I had a P0171 code and changed my vacumm lines then it was solved. Now I have another code of P0430, i have an obd2 bluetooth dongle connected to my phone and i tried erasing my code, then after some miles of driving after I turn the car off it will have another code, the p0171. So I tried checking it a couple of times that it might be just a coincidence. But its been a week since I have both codes (p0171,p0430). And everytime I erase one other one will pop when I use the car the next trip i make. Is it a possibility of an ecu problem?
Just a heads up, I just changed my coolant temp sensor OEM, thermostat and rubber gasket (OEM), I also just did new sparkplugs.
thanks in advance!
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jaaa. thanks man. i have a patching compound that i can use for exhaust leaks. ill try it tonight hope itll fix it. does your car respond better in mpg after fixing it? im doing 20 to 21mpg combined now. i hope to have mine back to 29mog highway and 24mph city.
#4
No change in mileage, just fixed the CEL light. BTW, mine was a 420 code which is the driver's side cat. Yours is a 430 so it should be on the passenger cat side.
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just to follow up the thread, i did fix the codes now thanks to you jaaa, i saw that one of the flanges has a small carbon buildup so i assumed thats where the leak comes from, i have a spare exhaust paste to cover it up, now i dont have any error codes for 2 days. ill check once in a while abd see if it resolved the problem permanently. thanks again sir!!
#6
just to follow up the thread, i did fix the codes now thanks to you jaaa, i saw that one of the flanges has a small carbon buildup so i assumed thats where the leak comes from, i have a spare exhaust paste to cover it up, now i dont have any error codes for 2 days. ill check once in a while abd see if it resolved the problem permanently. thanks again sir!!
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