codes shown 45, 51 ,42 whats the probeem starting

daddynate
5

Asked by daddynate Apr 28, 2013 at 02:57 PM about the Buick Grand National

Question type: Maintenance & Repair

i changed coil & module and the crank sensor still no spark

3 Answers

judge_roy
Not Active

code 42 is "intermittent code" (for the ECU presumably)

judge_roy
Not Active

45 is Oxygen sensor (rich exhaust) 51 (what I could find PROM error [programmable read-only memory]

judge_roy
Not Active

I'd look at battery and chassis ground as the cause of many on-board computer problems, also check the age of the battery seven years old is TOO old~

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