Catalogue identity
The TuningService.uk ECU catalogue records EDC16U31 under Bosch EDC16 (catalogue record 111, observed 10 November 2026). The catalogue name is an identification lead; it does not by itself prove vehicle fitment or software compatibility.
This entry is grouped with EDC16U by its catalogue name for navigation. That placement does not establish hardware or calibration equivalence.
Application evidence
AutoTuner lists selected VAG 1.9, 2.0 and 2.5 TDI unit-injector examples.
Tuning and identification
For the documented unit-injector applications, identify torque-to-fuel relationships, injection timing and air limits in the matched software. U31 does not imply compatibility with U1 or U34 files.
Read EDC16 torque fuel and tuning basics and EDC16 variant application and tuning differences for the shared context. Examples are not an exhaustive fitment list; check the installed ECU and current tool documentation.
Further application examples
Beyond its Volkswagen Group examples, Alientech’s 2017 list includes selected Chrysler Sebring 2.0 CRD, Jeep Compass 2.0 CRD and Mitsubishi Grandis 2.0 DI-D entries under EDC16U31. The documented VAG unit-injector description should not be assumed to describe every vehicle in this tool list. Alientech, PDF pages 39, 64 and 77.
Identification photograph
The label identifies an Audi EDC16U31 with Bosch 0 281 012 723 and Audi 03G 906 016 JA. The source lists the example for an Audi A4 1.9 TDI; the vehicle, exact ECU and software should still be checked together.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
- TuningService.uk owner ECU catalogue. TuningService.uk master ECU catalogue; administrator access required. Active Bosch EDC16 labels observed on 10 November 2026; this is a dated observation, not a live feed. Source revision Catalogue records and identifiers as observed 2026-11-10; accessed 2026-11-10.
- AutoTuner: Bosch EDC16 and Siemens PPD1.x application release. AutoTuner; tool coverage for named vehicle and ECU examples. Source revision OBD-support release; accessed 2026-11-10.
- Volkswagen Self-Study Programme 304: Electronic Diesel Control EDC 16. Volkswagen AG, Service Training; independent PDF mirror. EDC16 description uses the V10 TDI unit-injector system, with R5 differences. Source revision SSP 304, especially printed pages 4, 8–10 and 15; accessed 2026-11-10.
- Alientech supported-vehicle list, document created 24 March 2017; historical tool coverage; accessed 10 November 2026.