Question about 2001 Toyota Sienna

1 Answer

Error code P 1135. what part needs to be replaced?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Toyota Master
  • 17,970 Answers

P1135. Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1).

The P1135 code on your Toyota is Air fuel ratio sensor - heater circuit malfunction. Basically the problem there will be with the air/fuel ratio sensor (on other vehicles it is refered to as an O2 oxygen sensor), or the wiring/connectors leading to it. It could also be a problem with a fuse or relay on the heater circuit. Again, not a real difficult problem to solve.

Now, to specifically answer your question. I'm not familiar with the inspections in New Jersey, however just fixing the P1135 code will not cause the check engine light to stay off because there are other unrelated codes. If the code P1135 was causing the other problems then perhaps fixing that code would fix the others, but that's not the case here. The reality is you'll need to have all the problem areas looked at (IAT sensor, MAF sensor, Air/fuel ratio sensor) and repaired in order for your engine light to stay off. Normally if there are codes stored a vehicle cannot pass inspection. I would get a second opinion from another local mechanic as what you've been told may not be 100% correct.

Good luck.

Posted on Oct 02, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Losing power after i changed the throttle valve body

check the seating as may have a air gap , also run the OBDII as may have picked up a code that is causing this , note the code , clear any codes and see if the problem returns , if it does then post the code(s) and will try to help

Jul 30, 2015 | 2004 Suzuki Verona

1 Answer

I got an error code 1135 for my 2001 Toyota can anyone please help?

your scan tool came with an index of codes, refer to it to translate. if you lost the index a haynes or chilton repair manual should have one

Apr 12, 2012 | 2001 Toyota Camry

1 Answer

Error code 1135

P1135 is Air/Fuel sensor Heater Circuit these are because cylinders 1,3,and 5 are not firing which also causes code P0125 .These cylinders are not making heat. the P0300 is because 1,3,and 5 dont miss constantly but they do frequently hence 301,303,and 305. P codes are for Powertrain. I would give the vehicle a good tuneup and make sure you are firing on all cylinders. Possibly need new O2 sensors if those codes don't go away(1130 & 1135) The definitions you DO have are correct. The P0125 "closed loop fuel control" thing is referring about your vehicle no longer being in "warm up" mode. In warm up mode you vehicle does not rely on sensors, it just follows default values for a specific length of time to warm up the engine, then it will adjust everything according to the sensors's inputs to the computer on the vehicle

Oct 05, 2011 | Cars & Trucks

1 Answer

I have a 2000 Camry - 6 cylinder with about 180,000 miles on it. The Check engine light came on and it showed three codes - P0125, P1130 and P1135 - We put in a new thermostat - and still the check engine...

Was the computer reset after the thermostat was replaced?? If not, it must be reset to clear prior codes. as for the p1130/1135, they are related here is some info>>>>

Mar 11, 2010 | 2000 Toyota Camry

1 Answer

2001 6cy camry has check engine light on. code 1135

Hello. You can do this yourself.

You need to replace the Air-fuel sensor. I would strongly suggest that you purchase and install a Toyota sensor, however. The "aftermarket" sensors do not have the exact same voltage signals, and will not rectify the condition; the light will remain on. We see this quite a bit in our service dept.

We hope that this helps you out.

Dec 30, 2009 | 2001 Toyota Camry

1 Answer

Error P0125 and 1135 on obd2 reader

125 insufficient coolant temp for closed loop 1135 sensor heater circuit response bank 1 sensor 1--both can be caused by same problem code can go off for insufficient warm up -low coolant level-thermostat leaking/stuck open or faulty sensor reset code and see if problem returns code sometimes known to go off if vehicle didnt warm up before being turned off short distance drive

Oct 21, 2009 | 1999 Toyota Camry

1 Answer

The check engine light is on.

i used to have this problem just dont mind it

Aug 10, 2009 | 2002 Toyota RAV4

3 Answers


That code is for your Air/Fuel Sensor Heater Circuit Malfunction (Bank
1 Sensor 1). Basically that circuit is either getting to much current or not enough. That can be cause by a couple things i can think of off the top my head like open or short in that circuit, or a faulty Engine control Module (ECM), Or Possibly your A/F sensor heater could be faulty. Without looking at the data and testing your truck its hard to be exact but i hope this helps.

Jun 14, 2009 | 1999 Toyota Camry

1 Answer

Honda Accord Radio code

Contacy your dealer with your VIN, he will yhen contact Honda and be able to assist you with the code.
I had similar problem and had resolved mine. If there is no solution, pls send me mail on

Oct 29, 2008 | 2002 Honda Accord

2 Answers

P1135 code 2002 toyota highlander 3.0 v6.

P1135 is the A/F sensor Bank 1 Sensor 1. Unfortunately, it is the sensor on the back side of the motor, in the manifold against the firewall. Its extremely common, and its not very difficult to replace, just dont try doing it with the motor hot. If you installed an aftermarket sensor, or an Oxygen sensor instead of A/F, you will still have problems. old exhaust gaskets tend to crumble, dont worry, your air mix didnt cause that. Which sensor was replaced?

Jul 24, 2008 | 2006 Toyota Highlander

Not finding what you are looking for?
2001 Toyota Sienna Logo

1,366 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8514 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides