Hello....New member here.
my 2001 Burb is giving me a P0327 code. there was an oil leak and inorder to narrow down the culprit I decided to degrease the engine bay and hose it off with water. I also replaced the valve cover gasket and when I took it for a drive after 25 miles or so, I am now getting a SES message and the code is P0327 bank 1. Here are my questions.
1. did my cleaning the engine had anything to do with this code?
2. considering this is a 25 year old vehicle, should I go ahead and replace both knock sensors, harness, intake manifold gasket and valley pan gasket.
3. or is there an easier fix.

Any help is appreciated.

 

I'd wait a few days, water could be present somewhere and causing the issue.

Ask me how I know this !!!

 

How? Did you have the same issue?

 

I've had check engine codes on other vehicles after cleaning the engine, had to wait for stuff to dry.

I've had the electric motor for an above-ground pool get wet during a rainstorm, and after two days of drying out, worked fine.

 

I finally decided to replace the knock sensor. she is 25yrs old and I have never replaced the knock sensor. I knock sensor was all rusted and there was water in the hole. while I was at it I decided to replace the valley pan gasket, intake manifold gasket, clean all fuel injectors (I got a cleaning kit on Amazon) and clean the intake manifold of all carbon deposit. All these were original. I also thought of replacing the O ring on the crank shaft position sensor, instead of replacing the whole thing because a) the current one is working and b) it is expensive ($150 for AC Delco at the dealer). Here's my question - can I just replace the O ring. If so, where can I buy that. the dealer only sell the whole unit. Thanks in advance.