Question about 1997 Toyota Avalon
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Posted on Jan 02, 2017
All cars sold in the US after 1995 use the same on board diagnotics called OBD-II. The codes are the same. Search OBM-II error codes and you'll get a listing.
P1150 Air/Fuel Sensor Circuit Range/Performance. (cylinder bank 1 Sensor 2)
P1150 may mean that one or more of the following has happened:
water or corrosion in the O2 sensor connector, loose terminals in the connector, wiring burnt on exhaust components, open or short in the wiring due to rubbing on engine components, holes in exhaust allowing unmetered oxygen into exhaust system, unmetered vacuum leak at the engine, bad O2 sensor or bad PCM.
P1155 Air/Fuel Sensor Heater Circuit. (cylinder bank 1 Sensor 2)
P1155 may mean that one or more of the following has happened: O2 Heater element resistance is high, Internal short or open in the heater element or O2 heater circuit wiring high resistance
Solution :Replace oxygen sensor and see if the problem goes away.
Posted on Nov 17, 2009
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P1150 Air/Fuel sensor circuit (bank 2 sensor 1)
P1155 Air/Fuel sensor heater malfunction (bank 2 sensor1)
There are a few quite a few reasons why this problem is present.
The car is 10years old, probably has between 100k and 200k miles.
I would guess that the sensor is bad and needs to be replaced. But you do want to look at other aspects of the car. I'm not there so you will need to find and confirm if the car needs a tune-up, if there is water in the fuel, if there is something else wrong with the exhaust system (like the CAT).
Also the wiring would need to be inspected to see if there are corroded, bent, or missing pins.
I will tell you that without a good scan-tool, you will either luck-out with changing the A/F sensors or you will be playing the guessing game for days. Good luck, but let me know if you have more questions.
Posted on May 12, 2010
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