Why is restricted perfomance light on in 2005 jaguar vandenplas

Thanks. I went to Advance and the tech there told me that the diagnostic said that it was "running lean". He said that i probably used gas that had water in it. I put a bottle of Seafoam in and the light went off. Am I safe? Or was that too easy? Thanks. I went to Advance and the tech there told me that the diagnostic said that it was "running lean". He said that i probably used gas that had water in it. I put a bottle of Seafoam in and the light went off. Am I safe? Or was that too easy?

I wouldnt recommend seafoam..the Jag dealerships normally use and cleaner made by the following BG-44K,AND 3M cleaners...for injectors and emissions..I would say it would be the preference of the individual.I will say I am a firm beleiver in the adage"If it is not broke dont try and fix it"If the cars mil lamp went off I would be content,but keep a close eye on her.The engine running lean or the opposite would mean that too much air or not enough could have been the real culprit.On these cars I have seen the air dryer induction at times will have a fine crack in it and will result in a maf sensor read too much or lean reading for air and fuel mixtures.Something tells me that you may see the restricted performance come back eventually.Make sure that the air dryer box containing the air filter is secure,the intake air running from the box to the throttle body is secured tightly with clamp.Last make sure the flat air catcher that runsdownward leading into the air dryer box surround has no cracks in it.Until next time happy Jaggingsmiling! Please dont be discourgaed about your car,it is a work of art and a true machine.They all have issues from the Rolls Royce to the Bugatti...The x350 is a solid Jaguars by all means. I wouldnt recommend seafoam..the Jag dealerships normally use and cleaner made by the following BG-44K,AND 3M cleaners...for injectors and emissions..I would say it would be the preference of the individual.I will say I am a firm beleiver in the adage"If it is not broke dont try and fix it"If the cars mil lamp went off I would be content,but keep a close eye on her.The engine running lean or the opposite would mean that too much air or not enough could have been the real culprit.On these cars I have seen the air dryer induction at times will have a fine crack in it and will result in a maf sensor read too much or lean reading for air and fuel mixtures.Something tells me that you may see the restricted performance come back eventually.Make sure that the air dryer box containing the air filter is secure,the intake air running from the box to the throttle body is secured tightly with clamp.Last make sure the flat air catcher that runsdownward leading into the air dryer box surround has no cracks in it.Until next time happy Jaggingsmiling! Please dont be discourgaed about your car,it is a work of art and a true machine.They all have issues from the Rolls Royce to the Bugatti...The x350 is a solid Jaguars by all means.