03 ep3 Check engine code p1166 Help?
09-30-2009, 06:14 PM
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03 ep3 Check engine code p1166 Help?
I had the check engine light ran at autozone,
came up code p1166, Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater Circuit Malfunction
Replaced the o2 sensor, and unplugged the battery to reset the CEL, car is still throwing a check engine light.
Has anyone had this problem or know how to fix it?
came up code p1166, Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater Circuit Malfunction
Replaced the o2 sensor, and unplugged the battery to reset the CEL, car is still throwing a check engine light.
Has anyone had this problem or know how to fix it?
10-03-2009, 10:48 AM
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Re: 03 ep3 Check engine code p1166 Help?
You should start by checking the wires from the O2 sensor connector to the ECU to check for any malfunction in the wiring. It sounds to me that the heater for the sensor isnt getting the correct voltage. ...this is just a start so dont expect it to cure any immediate problems... i had mice chew up my o2 sensor wires before, damn rodents.
Last edited by djvtoner; 10-03-2009 at 10:50 AM. Reason: adding text
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