U1A29 on the 2024 Bentley Flying Spur
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.
| 2075481/3 | 2025-08-29. Service bulletin. HVAC intermittently not cooling Diagnostic Trouble Code(s) U1A2900 and / or U1A2A00 evident. Customer statement: HVAC intermittently not cooling |
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| 2075447/2 | 2025-07-29. Service campaign. Climate control module (diagnostic address 0008) software update (SC24/29). The update ensures the HVAC system operates to specification and also ensures that one or a combination of the following DTC’s are not logged: U1A2900: Interior air conditioning Function restriction start / stop And / Or U1A2A00: Interior air conditioning Function restriction AC operation |
| 2075695/1 | 2024-11-07. Service bulletin. HVAC system not cooling - DTC U1A2900 and / or U1A2A00 stored within diagnostic address 0008. Customer statement: HVAC does not appear to be cooling sufficiently |
| 2075447/1 | 2024-11-02. Service campaign. Climate control module (diagnostic address 0008) software update (SC24/29). The update is required to ensure the climate control module has the latest available software installed The software update within the Work must be conducted, the update applies the latest specification software to the climate control module The update ensures the HVAC system operates to specification and also ensures that one or a combination of the following DTC’s are not logged U1A2900: Interior air conditioning Function restriction start / stop And / Or U1A2A00: Interior air conditioning Function restriction AC operation |
| 2074007/1 | 2024-11-02. Service bulletin. HVAC system not cooling - DTC U1A2900 and / or U1A2A00 stored within diagnostic address 0008. Customer statement: HVAC does not appear to be cooling sufficiently |
| 2075481/1 | 2024-11-01. Service bulletin. HVAC intermittently not cooling Diagnostic Trouble Code(s) U1A2900 and / or U1A2A00 evident. Customer statement: HVAC intermittently not cooling |
| 2074007/1 | 2024-07-04. Service bulletin. HVAC system not cooling - DTC U1A2900 and / or U1A2A00 stored within diagnostic address 0008. Customer statement / workshop findings: HVAC does not appear to be cooling sufficiently Workshop findings One or a combination of the following DTC’s are stored within diagnostic address 0008 U1A2900 - Interior air conditioning - Function restriction start / stop And / Or U1A2A00 - Interior air conditioning - Function restriction AC operation |
7 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.