Have Toyota Questions? Ask a Mechanic for Answers ASAP
I'm sorry the Tech you requested was unavailable to assist you today. It appears that Tech is currently "Offline". Now that his 15 minute "request lock" has expired, hopefully I can be of some assistance in his place...The P1135 is a very straight forward code pointing to a problem the A/F Sensor (Air-Fuel Ratio sensor. Very similar to an Oxygen Sensor, but "smarter" to accomodate Toyota emissions standards.). The A/F Sensor is located under the vehicle, mounted to the exhaust pipe before the Converter. With the A/F Sensor faulty it's not a "serious" problem, No. However, this sensor does play a role in the fuel/air delivery system, so there's a very strong chance that you will notice a decrease in fuel economy. And eventually, over time, this can harm the Converter and possibly lead to it's premature failure. So while not an immediate problem, definitely something to consider having addressed more sooner than later. The sensor sells for around $201 and the Labor Time Guide calls for just under an hour to complete the job. Labor rates vary from shop to shop, so what you pay for labor will effect the bot***** *****ne. For a job of this type, a "fair" labor rate can by anywhere from $85-$125 per hour. Please do the right thing and remember to leave a rating using the rating system at the top of this page or accept the answer so I may be credited for this Q&A. You can ask follow-up questions any time, even after you rate or accept.