Those are all very significant codes and need to be addressed. http://www.toyota-supra.info/forums/100107-post41.html
I'd start with disconnecting and thoroughly scrubbing all of the primary grounds and the positive wiring (especially in the engine bay). EDIT: The code 11 and 14 may be explained by power problems, but the code 52 is something else. Usually the knock sensor is bad or the wiring.
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Last edited by cre; 05-05-2013 at 05:30 AM.
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