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03 Fiesta Code P0030

jimmyw · 2013-01-03 20:09:37

This code came up recently on on the above car, and its telling me that its for the heater circuit of the pre-cat oxygen sensor (Bank 1 sensor 1).Now the chances are that the whole sensor needs changing, but I would just like to know if the circuit can be tested just in case there is a break .Like if I could know what…

03-01-2013 8:09pm

#1

jimmyw

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Join Date: August 2009

Posts: 3229

This code came up recently on on the above car, and its telling me that its for the heater circuit of the pre-cat oxygen sensor (Bank 1 sensor 1).Now the chances are that the whole sensor needs changing, but I would just like to know if the circuit can be tested just in case there is a break .Like if I could know what colour wires the heater circuit uses.Bit of a stretch I know.......

The W/M doesnt show the circuits at all.

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#2 04-01-2013 8:16pm

jimmyw

Registered Users, Registered Users 2 Posts: 3,382 ✭✭✭

Join Date: August 2009

Posts: 3229

I checked the colour of the wires and there are 2 white, 1 black and 1 grey.The two pins at the top of the connector (white) wires going to the sensor side have some kind of creamy substance on them.......

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