The SES (service engine soon) yellow light came on. Local auto stores will not erase the code due to EPA restrictions but they told me the error codes are P0440, P0446.
Auto forums recommended removing rust around the gas cap and get a new gas cap. I removed all the rust, got a new gas cap, but the SES light never went away on its own. People are saying that I have to disconnect the battery to erase the code. I did that, I left the negative battery terminal unscrewed over night, touched the unplugged negative wire with the positive wire for a few seconds to drain all capacitor charges, but the error code is still there, SES light remains lit.
Read in another forum how to reset ECU in cabin without battery disconnect. Below is the method:
1) Put the car in "on" mode, do not start.
2) At the third second (three dings) after turning to "on" (again not started) position, Floor (all the way down) and release the accelerator pedal fully five times in less than five seconds.
3) With the gas pedal at release position, wait about seven seconds, then floor the accelerator pedal and hold for ten or more seconds. Hold pedal down until the SES check engine light will start to blink slowly (my SES light never blinks).
4) Release the pedal and floor it down once again and hold for ten seconds. After these ten seconds the check engine light will begin to flash much more rapidly (My SES light never blinks). Release the pedal after fifteen seconds or done flashing rapidly. Turn the car off wait for a few seconds and then back on. The ECU/ECM is now reset.
Please help.
This is an ongoing thing for me. The rust around the gas cap comes back every year and I have to scrape it off. I need a way to be able to clear the SES light every year when it comes back during the rainy season. The "in-cabin pressing accelerator pedal method" worked for me a few years ago. I can no longer remember the timing sequence for pressing the pedal. None of the YouTube videos are for my model. If you have done this for my car model and cleared the SES light, please let me know the pedal pressing sequence.
Also, where is the fuse/circuit breaker located for the ECU/ECM unit?
Auto forums recommended removing rust around the gas cap and get a new gas cap. I removed all the rust, got a new gas cap, but the SES light never went away on its own. People are saying that I have to disconnect the battery to erase the code. I did that, I left the negative battery terminal unscrewed over night, touched the unplugged negative wire with the positive wire for a few seconds to drain all capacitor charges, but the error code is still there, SES light remains lit.
Read in another forum how to reset ECU in cabin without battery disconnect. Below is the method:
1) Put the car in "on" mode, do not start.
2) At the third second (three dings) after turning to "on" (again not started) position, Floor (all the way down) and release the accelerator pedal fully five times in less than five seconds.
3) With the gas pedal at release position, wait about seven seconds, then floor the accelerator pedal and hold for ten or more seconds. Hold pedal down until the SES check engine light will start to blink slowly (my SES light never blinks).
4) Release the pedal and floor it down once again and hold for ten seconds. After these ten seconds the check engine light will begin to flash much more rapidly (My SES light never blinks). Release the pedal after fifteen seconds or done flashing rapidly. Turn the car off wait for a few seconds and then back on. The ECU/ECM is now reset.
Please help.
This is an ongoing thing for me. The rust around the gas cap comes back every year and I have to scrape it off. I need a way to be able to clear the SES light every year when it comes back during the rainy season. The "in-cabin pressing accelerator pedal method" worked for me a few years ago. I can no longer remember the timing sequence for pressing the pedal. None of the YouTube videos are for my model. If you have done this for my car model and cleared the SES light, please let me know the pedal pressing sequence.
Also, where is the fuse/circuit breaker located for the ECU/ECM unit?
Apr 15, 2018 at 6:10 AM
