L300 with 4 errors
#1
L300 with 4 errors
I have an 2004 L300 sedan V-6,it has the following codes P0174,P0171,P0421,P0431 the repair place is saying that all 4 O2 sensors and
2 cat converters have to be changed which does not track with me because P0174 says the engine is running lean!!! Is there anyone that might have some insight,need help
2 cat converters have to be changed which does not track with me because P0174 says the engine is running lean!!! Is there anyone that might have some insight,need help
#2
WOW! That's a lot of stuff to go bad all at once.
Personally, I'd go another way (just cuz I'm cheap). I'd locate the Engine Coolant Temperature Sensor (ECTS), and disconnect the plug (careful, its plastic), and measure the resistance across the sensor pins. If the measurement is above 5,000 ohms, or below 50 ohms, I'd replace the sensor - clear the computer, and do a couple of drive cycles to see if your error codes return. Part is about $15usd. Make sure to use teflon tape on the threads ...
Personally, I'd go another way (just cuz I'm cheap). I'd locate the Engine Coolant Temperature Sensor (ECTS), and disconnect the plug (careful, its plastic), and measure the resistance across the sensor pins. If the measurement is above 5,000 ohms, or below 50 ohms, I'd replace the sensor - clear the computer, and do a couple of drive cycles to see if your error codes return. Part is about $15usd. Make sure to use teflon tape on the threads ...
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