Ford P1139: Water-In-Fuel Indicator Circuit Malfunction
Is your scanner showing Ford P1139?
No worries. We'll show you what it means and how to deal with it.
Ford P1139: Water-In-Fuel Indicator Circuit Malfunction
OVERVIEWWhat Does The Ford P1139 Code Mean?
Key on or engine running; and the PCM detected an unexpected voltage condition on the MAT sensor circuit during the test.
What Are The Potential Causes Of The Ford P1139 Code?
- Water-In-Fuel circuit is open between Indicator and the PCM
- Water-In-Fuel circuit is shorted to ground
- Water-In-Fuel power circuit is open (check fuse in I/P panel)
- Water is present in the fuel filter housing (drain it and retest)
- PCM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Cardone 78-4937 Remanufactured Ford Engine Control Module (ECM) / Computer (Renewed)
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Ford P1139, DTCDECODE.
