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Toyota Avalon 2001 error code 1155 - 2002 Toyota Avalon

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The cooling temperture send unit is send out of range data to the computer (ECU).

The corrective is to buy a coolant sending unit and replace it.

The unit is withing 6 inches from the thermostat housing.

Since your car is a 2002 and probably has around 80,000 miles on the odometer so it's a good time to all of the following on the same time.

temp. sending unit / clean the contacts

drop bottom coolant has and flush radaiator

change 195 F thermostat and gasket + seal with black RTV.

Fill 50/50 mix coolant. /// if you live in aub-zero temp area then read the chart on the bottle for the recommended mix

Please rate my answer if it's helpful to you.



Posted on Dec 12, 2009


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Posted on Jan 02, 2017


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, Go here and see which Airflow Sensor you need to replace. The chap tells you where to find it under the hood.

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Disconnect your battery for 10 minutes after which you connect it back the lights should go off. Don't report to toyota. Nigerian style!

Rate this............

Mar 21, 2009 | 2007 Toyota Avalon

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