# B12A3 on the 2021 Nissan Altima

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name B12A3

- [10186854](https://open.wenmarpro.com/bulletins/10186854), 2021-02-06: DTC B12A3\-72 FOR FUEL PUMP RELAY STUCK OPEN SERVICE INFORMATION DTC B12A3\-72 \(Fuel Pump Relay Stuck Open\) may be stored when the IPDM monitor circuit internally sees 0V to ground at pin \#46. This is caused by an internal short to ground in the IPDM or one of the IPDM fuses listed below is open. If B12A3\-72 is current or reoccurs after erasing DTCs, inspect the model specific fuse first. If the fuse is not open replace the IPDM. • Altima – Fuse \# 58 \(page 2\) • Kicks – Fuse \# 54 \(page 3\) • Versa – Fuse \# 61 \(page 4\) For additional IPDM diagnostic information refer to the Electronic Service Manual \(ESM\): Section ELECTRICAL \& POWER CONTROL \> POWER CONTROL SYSTEM \> IPDM E/R. See model specific fuse locations starting on page 2.