WenmarOpen by Wenmar Pro

P0A90 on the 2013 Chevrolet Malibu

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.

Nobody has written a description of this code yet.

Bulletins for this model year that name P0A90
PIE0316A2018-06-04. Service bulletin. This engineering information bulletin is requesting information from dealers on a customer concern that a Battery Saver Active message is displayed on DIC, drive motor generator belt broken, and DTC P1A6F or P0A90 may be set.
PIE0316B2017-08-15. Service bulletin. This engineering information bulletin is requesting information from dealers on a customer concern that Battery Saver Active Message displayed on DIC, drive motor generator belt broken, and DTC P1A6F or P0A90 may be set.
122392017-01-26. Service bulletin. 12239 - SERVICE UPDATE. THE DRIVE BELT MAY SEPARATE. THIS WOULD CAUSE A LOSS OF POWER TO THE MOTOR GENERATOR UNIT AND AIR CONDITIONING COMPRESSOR, DTC P0A90 WILL BE SET, AND THE RED BATTERY INDICATOR WILL ILLUMINATE. IF THE DRIVER IGNORES THE RED BATTERY LIGHT AND CONTINUES TO DRIVE THE VEHICLE, THE STORED BATTERY CHARGE WILL EVENTUALLY BE DEPLETED AND THE CUSTOMER WILL NOT BE ABLE TO START THE VEHICLE. DEALERS ARE TO REPLACE THE DRIVE BELT.
PI-0316-A2015-04-11. Service bulletin. BUICK/CHEVROLET: DISPLAYED IN DRIVER INDICATOR CLUSTER (DIC) IS MESSAGE REGARDING BATTERY SAVER ACTIVE, AND GENERATOR CONTROL MODULE REPORTS P1A6F OR P0A90, REVEALING DRIVER MOTOR GENERATOR UNIT (MGU) BELT HAS BROKE. *PE

4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.