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Join Date: May 2019 Location: Portsmouth
Posts: 18 Thanks: 0 Trader Rating: 0 ![]() | map sensor and boost pressure sensor, fault codes hi all, im recieving the following codes from diagnostics: P0235 and p0069. Turbocharger (TC) boost pressure sensor A/supercharger (SC) boost pressure sensor A – circuit malfunction. (P0235) Manifold Absolute Pressure - Barometric Pressure Correlation. (P0069) everywhere iv'e read has said to change the boost pressure and the map sensor. the trouble is, i already have. which is a problem as i would really rather not keep going around in circles. i was wondering if you could offer any advise on what to do as i am at a loss. ill give a list of things that ive changed to try give an idea as to what is new and what isnt. many thanks, cam new parts MAP MAF EGR FUEL FILTER BOOST PRESSURE SENSOR parts on order, coming tomorrow Valve, adjustment element (throttle flap) OEM: 46754960
__________________ Its not broken, it's just full of character Last edited by limpyjet; 12-06-2019 at 13:47. Reason: making things clearer |
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Join Date: Jan 2017
Posts: 2,992 Thanks: 411 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes what engine ?
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Join Date: Jul 2006 Location: Lancs now Flkestone,Kent.
Posts: 707 Thanks: 50 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes When you clear the faults,does the car drive normal till you put the engine under load ?
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Join Date: May 2019 Location: Portsmouth
Posts: 18 Thanks: 0 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes
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Join Date: May 2019 Location: Portsmouth
Posts: 18 Thanks: 0 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes or it will run until under load and fall into limp as soon as its in turbo range. it varies every time.
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Join Date: Jul 2006 Location: Lancs now Flkestone,Kent.
Posts: 707 Thanks: 50 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes Check the waste gate on the turbo,get a screw driver or bar, and gently open and close the waste gate. Mine jammed under load,freed it off as above and still good 9mth later. May not cure your fault,but it’s free to do.
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Join Date: May 2019 Location: Portsmouth
Posts: 18 Thanks: 0 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes been there, tried that im afraid. it was freely moving :/ thanks for the response though
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Join Date: Jan 2017
Posts: 2,992 Thanks: 411 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes I asked what engine, 1.3mjt is not enough, 75 or 90 bhp ?
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Join Date: Dec 2014
Posts: 742 Thanks: 57 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes He said 90...
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Join Date: Jan 2017
Posts: 2,992 Thanks: 411 Trader Rating: 0 ![]() | Re: map sensor and boost pressure sensor, fault codes Oooops! 90hp means turbo with variable geometry. This is done by moving a plate inside the turbo via a vacuum actuator, itself ECU controlled by an electro-valve. When this fails the boost pressure gets so high that the ECU goes in limp mode. No need to replace MAP, MAF etc. Just inspect this VariableVaneTurbo system and fix it, I bet for a broken vacuum pipe... BRs, Bernie If someone here helped You fix -or better, understand- your issue, hit the thanks icon @ bottom right corner, it's free and makes us feel helpy ;-)
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