Question about Alfa Romeo 156
This code is for the heater element in the AF sensor, it is out of range, an AF sensor is the smae as a oxygen sensor, it varies only in the material it's made from, otherwise it does the same thing as any O2 sensor, which is monitor the amount of oxygen present in the exhaust gases, the computer uses this info to control the fuel/air mixture. I think it would be safe to replace the sensor, disconnect the battetry to clear the code. The sensor is located near to (maybe in the exhaust pipe) or in the exhaust manifold, it has a wire connector to it with either 3 or 4 wires. it is barrel shaped and about the size of a magic marker..
Posted on Aug 07, 2008
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Posted on Jan 02, 2017
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