Codes-P1130 & P1135?

[mel56]

Have a 2000 Avalon XLS with codes P1130 & P1135, Bank1, Sensor1 where exactly are these two 02 sensors?
Thanks,
Mel

[mdt1963]

bank one is the senser in the exhaust manifold closest the fire wall the b2s1 is the senser in the manifold closest the rad.

[garagedude]

I will paste below an entry I put up on this FORUM a while back regarding my experience and knowledge about O2 sensor/replacement. Hope this helps as if you can diagnose and repair the problem, you will save yourself a lot of money.
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had check engine light on in my 2002 Avalon XLS. Researched out codes and function of A/F O2 sensors and fixed the problem. Remember however it is for a 2002 Avalon – not your year – but may give you some clues.

P0125 INSUFFICIENT COOLANT TEMP. FOR CLOSED LOOP FUEL CONTROL
P1133 a/f SENSOR CIRCUIT RESPONSE (Bank1, Sensor1)
P1130 A/F SENSOR CIRCUIT RANGE/PERFORMANCE (Bank1 Sensor1)
P1135 A/F FUEL SENSOR HEATER CIRCUIT RESPONSE (Bank1, Sensor1)

Fuel mixture control is combination of conditions that include O2 sensing, and temperature.
P0125 seems to say engine is not warming up enough to operate from an open loop condition to a closed loop condition. What does your temp. gauge say? Is it below normal operating temp – could be a thermostat stuck open.

Open loop – engine runs in this mode until water temp reaches max operating temp, and O2 sensor heats up enough to operate (about 1800 degrees), etc. The car computer uses a table look up method to define mixture. So this is not very accurate, and you burn more gas and possibly screw up your cat. Converter.
Closed loop – it uses all of it’s sensor input to accurately define the mixture, so you should be getting about 29mpg.
The O2 sensor senses O2 in exhaust, plus there is a heater in it to bring it up to temp fast so engine runs in closed loop mode quicker. Your P1135 seems to say one of you A/F O2 sensor (heater) is bad. I had TWO bad sensors – open heater circuits - in my car at 106,000 miles, which is about when these start to fail. P1133 and P1135 is O2 response time - but may be caused by defective heater. Either way - the A/F O2 sensor is suspect.

The error code P1155 and P1135 and resulting check engine light is due to failure of one or more A/F Sensors (Air/Fuel sensor, or sometimes called Oxygen Sensor). There are three in my 2002 Avalon. There are two parts to the sensor - a heater that heats up the sensor quickly, and the Oxygen sensing part. The error code says you have a problem with the heater. Your mileage after warm up should be normal if O2 part is working OK. If you get consistent bad mileage, I would get it fixed ASAP as an over rich mixture will shorten the life of the CAT converter.
SENSOR TYPES (at least on my 2002)
Bank2 Sensor 1 - front of engine exhaust manifold
Toyota part 89467-41040 by DENSO. OEM equiv. Denso 234-9021
Heater resistance check at 68 degrees F 0.8 to 1.4 ohms
Bank 1 Sensor 1 - rear engine exhaust manifold
Toyota part 89467-41030 by DENSO. OEM Equiv. DENSO 234-9021
Cost of these about $180 each - find via google search. Toyota price
about $230 each.
Heater resistance check - same as above
Bank 1 Sensor 2 - under car in back of Catl. Converter, Connecter under
passenger front seat.
Toyota part 89465-07040 by DENSO. OEM Equiv. DENSO 234-4061
OEM part costs about $83.
heater resistance check at 68 degrees F. 11 - 16 ohms.
You need to unplug each sensor, and test resistance reading between the two terminals in sensor plug that have the two black wires into plug. This will check if the heater in the sensor is open or shorted. Resistance readings are as shown above. You will probably find one or more that have failed. I had two out of three bad!!!! (106K miles on car)
The front sensor - easy to get to and remove. The rear one - you can fish your hands down from the top by fire wall to unscrew and disconnect. The one by the cat. Converter - remove four bolts holding passenger seat, lean it back out of your way. Pull carpet out from under the plastic on the center console, pull out as best you can, you will see the sensor connector and the wires coming through the floor board. Disconnect the connector, and push the rubber grommet out the hole - then you should be able to unscrew the sensor from under the car.
This procedure is a guide only - you are on your own. One needs to be fairly mechanical to pull this off... Good luck. Hope this helps……

[masterdiagnostictech]

the sensor near the firewall only comes out clean 60-70% of the time, sometimes you have to get a new manifold or have your repaired.. its not a fun thing for somebody at home!!
the one in the front is easy, but also sometime won't come out clean.... what i mean is the threads pull out...

[zmzm03]

If both Toyota parts 89467-41040 and 89467-41030 have the same Denso part number 234-9021, how should I buy the Denso for 41030? Is there only one Denso for both A/F sensor? thanks!