P203B on the 2014 Audi A8
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.
| A011913 20353688 | 2019-04-02. Service bulletin. This bulletin contains repair instructions for when a MIL is on with DTC P203B00. |
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| A011875 2035368- | 2018-09-17. Service bulletin. This bulletin contains repair instructions for when a MIL is on with DTC P203B00. |
| A011404 2035368- | 2017-12-05. Service bulletin. Supersedes Technical Service Bulletin Group 01 number 14-84 dated July 28, 2014. MIL on. DTC P203B00 (Reductant Level Sensor Circuit Range/Performance) is stored in the engine control module (ECM), J623 (address word 01). Due to a production issue for the level sensor, the ECM cannot correctly read the reductant (AdBlue) fluid level. |
| A011484 2035368- | 2017-11-08. Service bulletin. Supersedes Technical Service Bulletin Group 01 number 14-81 dated June 24, 2014. The MIL is on. DTC P203B00 (Reductant Level Sensor Circuit Range/Performance) is stored in the engine control module (ECM). Due to a production issue for the level sensor, the ECM cannot correctly read the reductant (AdBlue) fluid level. |
| A011481 2035368- | 2017-11-08. Service bulletin. Supersedes Technical Service Bulletin Group 01 number 13-32 dated September 26, 2013. The MIL is on. DTC P203B00 (Reductant Level Sensor Circuit Range/Performance) is stored in the engine control module (ECM), J623 (address word 01).Due to a production issue for the level sensor, the ECM cannot correctly read the reductant (AdBlue) fluid level. |
| A011332 2035368- | 2017-10-31. Service bulletin. MIL on. DTC P203B00 (Reductant Level Sensor Circuit Range/Performance) is stored in the engine control module (ECM), J623 (address word 01). Due to a production issue for the level sensor, the ECM cannot correctly read the Reductant (AdBlue) fluid level. |
6 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.