after replacing the upfront oxygen sensor (error code 1135), the check engine light isn't going off and the error code is still 1135. Any ideas on what the problem is?

after replacing the upfront oxygen sensor (error code 1135), the check engine light isn't going off and the error code is still 1135. Any ideas on what the problem is? 1 Answer

what causes the check engine,vsc and the trac off light to come on? 1 Answer

MY CHECK ENGINE LIGHT,VSC AND THE TRAC OFF LIGHT IS ON, I HAD A ALTERNATOR PUT ON 4 DAYS AGO.

My VSC and Check Engine lights are on and I am hearing a resonating noise coming from under my Highlander [exhaust system?]. The code is p0136 - oxy sensor - are these issues related? 3 Answers

I have a 2002 Highlander w/ 112K miles on it. Don't want to put huge $$$ into it, but noticed the VSC and Engine Lights come on and stay on. Correspondingly, I have also recently noticed a resonatin...

2003 Toyota Highlander, Bank 2, Oxygen Sensor 2 downstream, where is it located in the engine? 1 Answer

My son replaced a sensor, the check engine light is still on. Now we are not sure whether he replaced the correct one. PLEASE HELP!!! Thank You!

i changed the oil and radiator fluids in my 2005 toyota highlander and after about 2 hours, the check engine, vsc and trac off lights came on. used SAE 10w-40 instead of SAE 5w-30. is that the cause? 6 Answers

i changed the oil and radiator fluids in my 2005 toyota highlander and after about 2 hours, the check engine, vsc and trac off lights came on. i used SAE 10w-40 instead of SAE 5w-30. i also poured in ...