Routing

We have a Juniper MPC4E-3D-32XGE-SFPP that has been performing fine for the last two years but is starting to generate alarm messages in the logs:

This error comes up every minute or so:

fpc10 Error: /fpc/10/pfe/0/cm/0/PQ3_Chip/0/CMERROR_PQ3_DDR_1_BIT_MINOR (0x160001), scope: board, category: memory, severity: minor, module: PQ3 Chip, type: PQ3 DDR single bit minor error

This error comes up frequently, between 2 to 15 minutes apart:

chassisd[17838]: CHASSISD_FPC_ASIC_ERROR: <FPC 10> ASIC Error detected errorno 0x00160001 (null)

I'm guessing that the errors are related, but I can't find any information on the second message.  Has anyone see this before?

Hello Bob, For that alarm we have this KB,

https://supportportal.juniper.net/s/article/Syslog-Message-Cmerror-Op-Set-PQ3-Chip-PQ3-DDR-single-bit-error-minor-alarm?language=en_US

if you get the alarm port restart the fpc, please open a JTAC case