Po4FB code
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Joined: Jan 2026
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From: Ardsley New York
Po4FB code
Hello, my check engine light came on, a P04FB code I replaced the engine crankcase pressure sensor, on initial drive light was still on, reduced engine power was still active and fan stayed on after I shut car down , made appointment to bring my car to dealer. Decided to take truck down to store , check engine light was still on by the reduced engine power went away and the fan didn’t stay on after I turned car off. Does it just take some time to clear out the codes? Gonna try again in morning
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Joined: Oct 2014
Posts: 4,334
From: North Central Indiana
Hello, my check engine light came on, a P04FB code I replaced the engine crankcase pressure sensor, on initial drive light was still on, reduced engine power was still active and fan stayed on after I shut car down , made appointment to bring my car to dealer. Decided to take truck down to store , check engine light was still on by the reduced engine power went away and the fan didn’t stay on after I turned car off. Does it just take some time to clear out the codes? Gonna try again in morning
https://www.tsbsearch.com/Chevrolet/PIP5841A
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