WenmarOpen by Wenmar Pro

P164B on the 2011 Audi S5

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. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name P164B
A011485 2036761-2017-11-08. Service bulletin. Supersedes Technical Service Bulletin Group 01 number 14-71 dated March 13, 2014. The MIL is on. DTC P164B(00) is stored in the engine control module.The oil pressure switch is defective.
A011471 2036761-2017-11-08. Service bulletin. The MIL is on. DTC P164B(00) is stored in the ECM. The oil pressure switch is defective.

2 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.