Trouble Code "P1155 Manufacture Control Fuel Air Metering" on 2003 Rav4 - Toyota RAV4 Forums
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#1 (permalink) Old 07-24-2010, 06:33 PM
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Trouble Code "P1155 Manufacture Control Fuel Air Metering" on 2003 Rav4

Hi. My check engine light came on yesterday, so I checked it with my scanner and code "P1155 Manufacture Control Fuel Air Metering" comes up. What could be the problem? If it's a 02 Sensor; What one?? Please Help!!
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#2 (permalink) Old 08-11-2010, 11:54 AM
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P1155 Air/Fuel Sensor Heater Circuit (Bank No. 2 Sensor No. 1)

open hood stand in front of vehicle the one top left is the one you need.

Circuit Description
Heated Air/Fuel (A/F) sensor (bank No. 2 sensor No. 1) monitors exhaust gas oxygen content and delivers input
signals to ECM. Heated A/F sensor (bank No. 2 sensor No. 1) is located on exhaust manifold above catalytic
converters. See Fig. 20 . A/F sensor may also be referred to as A/F ratio sensor. ECM uses input signals to
determine fuel injection system operation. DTC is set when A/F sensor (bank No. 2 sensor No. 1) output
voltage does not change after engine is started with engine at normal operating temperature, engine speed of
1400 RPM or more and with vehicle speed of 38 MPH or more. Possible causes are:
�� A/F sensor (bank No. 2 sensor No. 1) circuit is open or shorted.
�� Defective A/F sensor (bank No. 2 sensor No. 1).
�� Air induction system malfunction.
�� Improper fuel pressure.
�� Defective fuel injector.
�� Vehicle has run out of fuel.
�� Defective ECM.
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