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Title: Code P1131 Post by Scorpio_Mike on Mar 28th, 2010, 9:21pm Pegasus kindly did an OBD scan on my 2.3 at the Kent meet today and the only code showing was : P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1. Is this anything to be too concerned about ? What needs fixing ? Thanks. |
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Title: Re: Code P1131 Post by Simmo on Mar 29th, 2010, 7:22am Mike, Isn't it the Lamda sensor ??. Has a wire come off??. This page (http://www.fordscorpio.co.uk/ho2smonitor.htm) may help particularly the section headed 'Troubleshooting'. |
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Title: Re: Code P1131 Post by tlundkvi on Mar 29th, 2010, 2:26pm It may also be the lambda sensor is just dead. No switching means it just reports a flat value. They're supposed to last 60K, but may last longer. I've seen them on ebay with ford specific plug for around 20 pounds. |
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Title: Re: Code P1131 Post by Scorpio_Mike on Mar 29th, 2010, 6:43pm Cheers guys :) Will investigate further and report. Car has done 144k so maybe sensor has gone kaput ??? |
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Title: Re: Code P1131 Post by Scorpio_Mike on Mar 29th, 2010, 8:27pm OK, dumb question time now... Does a 2.3 16v have 1 or 2 lambda sensors ? |
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Title: Re: Code P1131 Post by Tompion on Mar 29th, 2010, 8:56pm Just the pre cat sensor. According to this site it should be a planar type: http://www.gendan.co.uk/ |
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Title: Re: Code P1131 Post by Pegasus on Mar 30th, 2010, 8:06pm Hi Mike, have a look HERE (http://www.fordscorpio.co.uk/obd2scan3.htm). Also the LTFTs were ok on the scan so no faulty FP Reg or leaking vacuum pipes. The graph of the pre cat sensor showed v slow switching - so may be on way out. However, the enhanced scan reading 'O2S11_FL' (O2 sensor bank 1 sensor 1 has failure) says "No" ??? Perhaps someone else may have an answer to this Paul |
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