# P164D on the 2013 Audi Q7

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 P164D

- [10123891](https://open.wenmarpro.com/bulletins/10123891), 2017-11-17: DTC P164D00 \(Oil pressure switch for reduced oil pressure malfunction\) is stored in the engine control module, J623 \(01\). Red oil pressure warning light may be on. An oil filter that is too short is installed. The oil filter must be 155 mm.
- [10122455](https://open.wenmarpro.com/bulletins/10122455), 2017-11-08: Supersedes Technical Service Bulletin Group 01 number 13\-42 dated November 21, 2013. DTC P164D00 is stored in the engine control module. Red oil pressure warning light may be on. An oil filter that is too short is installed. The oil filter must be 155 \(\+/\-1\) mm long. If the oil filter is too short, the drain flap in the oil filter housing will not be completely closed and oil pressure will be reduced.