Malfunction Indicator Light

06-23-2006, 04:05 PM
The MIL came on on our 2005 Pacifica. I took it to a part's store that diagnoses the light for free. It shows the code P0038 - "HO2S Heater Circuit High Voltage Bank 1 Sensor 2." Does anyone know what I need to do to fix this problem? Does this mean it's the O2 sensor or something wrong with the wiring leading to the sensor?

Thanks in advance.

07-01-2006, 04:12 PM
If you are driving a 2005 then take the car back to the dealer to get it repaired rather than doing it yourself. Actually the code is P0138. This is an emissions related issue and should be covered under the emissions warranty and should be repaired free of charge. It does indicate a bad O2 sensor.

07-02-2006, 07:14 AM
The wiring that connects to the O2 sensor became unclipped and when I drove over a speed bump became disconnected. Easy fix. Yes, it is under warranty, but taking to the dealer is time consuming and there are only so many hours in a day.

07-02-2006, 12:41 PM
I understand your problem. Yes time is at a premium these days. Pleased that you got it repaired.

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