P1521 when it rains?

[acolic]

Hi

I’ve started to get a P1521 only when it rains. After things dry up the code goes away.

Anything obvious I should look at?

Thanks

Alex


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[Fast69Mopar]

When was the last time you changed the oil? Did you use the correct viscosity as in 5W/20? This code can set due to incorrect oil viscosity. I also remember at one time there was a flash update available for the PCM because of this issue.

 

[acolic]

Hi

I changed it in May and I used Valvoline Max Life 5W 20.

So right oil and I only get the code when it rains.

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