P0456 on the 2023 Volkswagen Jetta
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.
| V0125042078029_2 | 2025-07-08. Service bulletin. DTC P0456 & Update programming for Engine/Motor Control Module |
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| V0125042078029_1 | 2025-07-08. Service bulletin. DTC P0456 & Update programming for Engine/Motor Control Module |
| V0123082070690_5 | 2025-07-08. Service bulletin. Software update for DTC P0456 |
| VIN4APIN20230824 | 2023-09-01. Service bulletin. Customer states MIL-on, P2421 stored in ECM memory Customer states MIL-on, P2402 stored in ECM memory Customer states rattle from below the vehicle Customer states MIL-on, fault P04F0 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states sun visor is loose/broken Customer states seat memory is inoperative Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract |
| VIN4APIN20230822 | 2023-09-01. Service bulletin. Customer states MIL-on, P0442 stored in ECM memory Customer states rattle from below the vehicle Customer states MIL-on, fault P04F0 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states sun visor is loose/broken Customer states seat memory is inoperative Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract |
| VIN4APIN20230815 | 2023-09-01. Service bulletin. Customer states MIL-on, P0442 stored in ECM memory Customer states rattle from below the vehicle Customer states MIL-on, fault P04F0 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states sun visor is loose/broken Customer states seat memory is inoperative Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract Customer states airbag light on |
| VIN4APIN20230803 | 2023-09-01. Service bulletin. Customer states MIL-on, P0442 stored in ECM memory Customer states rattle from below the vehicle Customer states MIL-on, fault P04F0 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states condensation in the taillights Customer states sun visor is loose/broken Customer states seat memory is inoperative Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract Customer states airbag light on |
| VIN4APIN20230731 | 2023-08-04. Service bulletin. Customer states MIL-on, P0442 stored in ECM memory Customer states rattle from below the vehicle Customer states MIL-on, fault P04F0 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states condensation in the taillights Customer states sun visor is loose/broken Customer states seat memory is inoperative Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract |
| VIN4APIN20230713 | 2023-08-04. Service bulletin. Customer states MIL-on, P0442 stored in ECM memory Customer states rattle from below the vehicle Customer states MIL-on, fault P04F0 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states condensation in the taillights Customer states seat memory is inoperative Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract |
| VIN4APIN20230626 | 2023-07-10. Service bulletin. Customer states MIL-on, P0442 stored in ECM memory Customer states MIL-on, fault P04F0 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states condensation in the taillights Customer states seat memory is inoperative Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract |
32 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.