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ERROR CODE PO131

Bobby Saulino
Bobby Saulino
in Ford Fusion Club

Featured Replies

ERROR CODE PO 131

does anyone know difinitivly what this error code means i keep clearing and it keeps recurring   I have changed the o2 sensor   Lambda but this was admittedly not top of range sensor could this b the problem? any and all suggestions welcome

Thank you

 

 

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     O2 Sensor Circuit Low Volts (Bank 1 Sensor 1) that's what comes up

  • Quote

    Cheap lambda sensors are often poor quality unfortunately so could be that.  Was it a generic one that had to have a plug soldered on?

  • Quote
    • 4 weeks later...

    Hi,

    I have recently had the same problem. Check if your car is fitted with two Lambda sensors, bank 1 is upstream so will be located up in the exhaust manifold as it comes off the engine block. The bank 2 downstream sensor is located on the exhaust downpipe after the cat.

    Otherwise the wiring could be damaged.

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