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P1521 Diagnostic Trouble Code Discussion for October 2009

Incorrect Engine Oil Type


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Trouble Ticket Help Requests for DTC P1521
Help Request Posted
1995 Mazda Millenia 2.5L No Start, Hesitation, Stall VIN: JM1TA2217S
P1521: manufacturer controlled vehicle speed idle control and auxiliary inputs. Customer brought car in complaining it was acting like it was running out of gas but not till it has been drove a mile or two. I started by changing fuel filter apon customers request, this did not help. I checked regulated fuel pressure which was 28,29 lbs wh...
October 13, 2009