I recently had VSC/Track, Brake and Check engine light came on. I have read the forums and tried the Brake oil levels and gas cap, lights are still on.
The code states that the O2 #1sensor in Bank 1 has low voltage, just replaced it, sent an erase code with scanner and only was able to turn off Check Engine. No more codes but still the lights are on.
Guys, I am new to this forum, great to see many Toyota lovers out there.
I recently had VSC/Track, Brake and Check engine light came on. I have read the forums and tried the Brake oil levels and gas cap, lights are still on.
The code states that the O2 #1sensor in Bank 1 has low voltage, just replaced it, sent an erase code with scanner and only was able to turn off Check Engine. No more codes but still the lights are on.
What should I do?
Thx.
You have to clear the codes that were set in the other systems as well.
When the check engine light comes on the engine ecm sends signal to the other ecm's in the vehicle that there is something wrong. The code description is something like " engine control system malfunction". I don't believe you can read codes from the other ecm's with a regular code reader. I think you are going to have to do one of 2 things.
1. Take it to a dealer or repair facility that has the ability to read and clear those dtc's.
2. Disconnect the negative battery for a few min. If you chose this one it is important to note that on the 03 Sequoia when disconnecting the battery the wheels need to be pointing straight or you could possibly get a code for the steering angle sensor. When you hook the battery back up and the wheel is turned it thinks that is straight.
Hope this helps.
__________________
Master Toyota Tech
ASE Master Tech
Shop Foreman
16 years with Toyota
#2 should work. After you disconnect the negative, you can step on the brake several times or leave the door open. It will drain any stored power. It will reset everything. Good luck.
Quote:
Originally Posted by robacabra
Thanks mral1515,
I'll try #2 first. If not i guess I'll have to go to the dealer.
Tried the battery trick. I disconnected the negative on the battery and waited about 5 min before I connected it again, unfortunately the lights did not turn off. I am not sure what else to try other than going to the dealer to get it checked.
I saw this but am not sure if it will work. I might give it a try, what do you think?
Tried the battery trick. I disconnected the negative on the battery and waited about 5 min before I connected it again, unfortunately the lights did not turn off. I am not sure what else to try other than going to the dealer to get it checked.
I saw this but am not sure if it will work. I might give it a try, what do you think?
Thanks.
There are a lot of codes for the Skid Control ECM for the Sequoia. You really need to find which codes is in it before jumping to something that expensive. There are a lot of TSB's for the skid control. If you get the code I will see if there is a TSB for it.
__________________
Master Toyota Tech
ASE Master Tech
Shop Foreman
16 years with Toyota
My lights are off. Funny didn't do anything. My guess on this is...Obviously the code was for the O2 S1B1 so I replaced that, after sending the clear code signal to the computer it cleared the DTC and there where some systems that were posted on my scanner as "incomplete". It seems that the computer remains in the previous state until these tests are completed. Today as I was driving they went off, I stopped, checked the computer with my scanner and the Incomplete tests were completed.
I guess that the computer needs to recheck the systems for several miles or run time before it clears these types of codes.
My lights are off. Funny didn't do anything. My guess on this is...Obviously the code was for the O2 S1B1 so I replaced that, after sending the clear code signal to the computer it cleared the DTC and there where some systems that were posted on my scanner as "incomplete". It seems that the computer remains in the previous state until these tests are completed. Today as I was driving they went off, I stopped, checked the computer with my scanner and the Incomplete tests were completed.
I guess that the computer needs to recheck the systems for several miles or run time before it clears these types of codes.
Thanks again for all the help.
Best regards,
Good deal glad you got it fixed.
Matt
__________________
Master Toyota Tech
ASE Master Tech
Shop Foreman
16 years with Toyota
Is this true on an 04 Sequoia as well. I just had an O2 sensor replaced and the CE light was off on the way home (3 miles). Then this morning after driving about 2 or 3 miles the CE light came back on. The Dealership yesterday made mention of the steering angle sensor indicating an issue, but they said that resetting it should fix it. If it doesn't, it will be an expensive fix >$700. I'm thinking of trying the above before I take it back to the dealership.
Thanks for any help.
Rob
Quote:
Originally Posted by mral1515
2. Disconnect the negative battery for a few min. If you chose this one it is important to note that on the 03 Sequoia when disconnecting the battery the wheels need to be pointing straight or you could possibly get a code for the steering angle sensor. When you hook the battery back up and the wheel is turned it thinks that is straight.
Hope this helps.
Took the negative off the battery with the wheels straight. CE Light didn't come on. Went for a test drive and thought it was resolved, but as I was driving down my street after going about 5 miles - maybe exactly? the CE light came on again. Thoughts?
Sequoia 2003 Code P0031
Re: Sequoia 2003 Code P0031
Linear Mode
