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1999 Pontiac Grand Am, the reader gave me the codes B1234 ABS $28, P0401 MOD $10

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1999 Pontiac Grand Am, the reader gave me the codes B1234 ABS $28, P0401 MOD $10. What do the codes mean?

Vehicle: 1999 Pontiac Grand Am

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I have no information on the B1234 code, but for the P0401 code you probably have to replace the EGR Valve.

P0401 PONTIAC - Exhaust Gas Recirculation Flow Insufficient
Read more: https://www.autocodes.com/p0401_pontiac.html

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