P0300 code on Saab 2003 – found a small vacuum leak in hose off crankcase by the oil dipstick. After replacing the hose the CEL did not come back on. Problem…
P0300 code on Saab 2003 – found a small vacuum leak in hose off crankcase by the oil dipstick. After replacing the hose the CEL did not come back on. Problem…
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The P0300 problem was solved with fixing that vacuum leak.
@scootermule123 first off your code is more likely a p0400 vacuum leak not
a p0300 which is a random multiple misfire good luck and hope your hose
fixed your issue