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90 m103 Check Engine Light
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01-23-2007, 04:56 PM
Mike Freeman
Registered User
Join Date: Aug 2006
Posts: 141
O2 sensor?
The oxygen sensor heater current is controlled by the MAS unit. With the engine running check for power at the two pin connector to the sensor.
If there is power to the Sensor add a ground wire from the sensor to chassis.
Mike
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