Service bulletins for the 2013 Audi Q7
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
1239 on file from NHTSA, as of 2026-10-19.
About P0456 on the 2013 Audi Q7: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P0456 are shown. Show all
| A011465 2035519- | 2017-12-14. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 01 number 14-58 dated January 14, 2014. The MIL is on. DTCs are stored in the ECM. Drivability is not affected. The leak detection pump (LDP) is a vacuum-driven, ECM-controlled, diaphragm pump. In order for the LDP to operate, the engine must be running and vacuum must be applied to the vacuum switch on the LDP. The LDP pressurizes the EVAP system and monitors any pressure drop within a specified amount of time in order to detect a leak. DTC P0456 or DTC P0442 can be stored due to static or sporadic air leaks in the EVAP system or static or sporadic air leaks in the LDP. |
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| A011458 2035519- | 2017-11-08. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 01 number 13-40 dated November 4, 2013. The MIL is on. DTCs are stored in the ECM. Drivability is not affected. The leak detection pump (LDP) is a vacuum-driven, ECM-controlled, diaphragm pump. In order for the LDP to operate, the engine must be running and vacuum must be applied to the vacuum switch on the LDP. The LDP pressurizes the EVAP system and monitors any pressure drop within a specified amount of time in order to detect a leak. DTC P0456 or DTC P0442 can be stored due to either Static or sporadic air leaks in the EVAP system or Static or sporadic air leaks in the LDP. |
| A011340 2035519- | 2017-10-31. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 01 number 13-38 dated October 23, 2013. MIL on. DTCs are stored in the engine control module (ECM). Drivability is not affected. The leak detection pump (LDP) is a vacuum-driven, ECM-controlled, diaphragm pump. In order for the LDP to operate, the engine must be running and vacuum must be applied to the vacuum switch on the LDP. The LDP pressurizes the EVAP system and monitors any pressure drop within a specified amount of time in order to detect a leak. DTC P0456 or DTC P0442 can be stored due to static or sporadic air leaks in the EVAP system or static or sporadic air leaks in the LDP. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.