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PSA DiagBox diagnostic system

Revision 2

by llandowtuninguk@gmail.com
Document manufacturer-confirmed Opel and Vauxhall DiagBox coverage.

This is a historical revision. Read the current page or return to its history.

Page organisation in this revision
Page type
Technical article
Subject
Diagnostics
Parent
Section level
Applies to
No ECU-specific applicability
Tool groups
Not recorded in this older revision
Manufacturers
Not recorded in this older revision

Changes from revision 2 to revision 7

Removed text is struck through; added text is highlighted.

DiagBox is the manufacturer diagnostic and repair software used for Peugeot, Citroën and DS vehicles. The PSA independent-operator installation guide describes VIN-specific access to ECU diagnosis, repair procedures and vehicle data also used by authorised repairers. Coverage and features depend on the vehicle and subscription. PSA DiagBox installation guide (2017).

Earlier systems

For supported older vehicles, DiagBox can launch Lexia for Citroën and Peugeot Planet 2000 (PP2000) for Peugeot. These names refer to diagnostic software for the respective marques, and do not mean all cars work with the same software release. SILIM PSA activation guide.

Opel and Vauxhall

Opel's independent-repairer conditions cover both Opel and Vauxhall. They distinguish PSA-conception vehicles managed by DiagBox from legacy vehicles managed by GDS2 or Tech2Win; programming access differs between these groups. Match the diagnostic system to the actual vehicle; see Opel diagnostic systems. Opel and Vauxhall diagnostic conditions, November 2025.Opel's independent-repairer conditions cover both Opel and Vauxhall. They distinguish PSA-conception vehicles managed by DiagBox from legacy vehicles managed by GDS2 or Tech2Win; programming access differs between these groups. Match the diagnostic system to the actual vehicle. Opel and Vauxhall diagnostic conditions, November 2025.

Interfaces and cloud software

DiagBox connects through a vehicle communication interface (VCI). Citroën lists DiagBox and DiagBoxCloud, and identifies certified interfaces including the ACTIA XS 2G and PSA interface. The manufacturer states that with a standard SAE J2534 Pass-Thru interface only reading functions are guaranteed, whereas a PSA interface offers all software functions. Exact capability, current support, subscriptions and authorisation should be checked against the vehicle and current service information. Citroën diagnostic conditions, November 2025.

See also Peugeot diagnostic tools and Citroën diagnostic tools.

Earlier workshop equipmentPeugeot TEP 92 and DIAG 2000 and Citroën ELIT, Lexia and Proxia are documented earlier workshop tools; see early Peugeot and Citroën diagnostic tools.Shared vehicle example: Fiat and ToyotaA 2022 ECS Electronics towbar wiring instruction names DiagBox for a trailer-function activation on its shared application group: Citroën Dispatch, Fiat Scudo, Vauxhall Vivaro C, Peugeot Expert and Toyota Proace. This is evidence for that supplier's specified procedure, not proof that every vehicle or function across these brands uses DiagBox. Confirm the specific vehicle, procedure and supported interface. ECS Electronics instructions, May 2022. See Fiat diagnostics and Toyota Techstream.Toyota Europe's GTS+ independent-user guide labels a separate selection “Diagbox For PROACE models”; the same screen distinguishes GTS+ and Toyota ISTA for other specified applications. The guide does not establish that every PROACE variant, year or operation is supported: verify the relevant Toyota procedure and market. Toyota Europe GTS+ independent user guide, page 5; see Toyota Techstream and GTS+.Cross-manufacturer model coverage examplesMarque / modelYear or generation statedWhat DiagBox is documented forPeugeot, Citroën and DSVIN-specific independent repair coverage in the 2017 PSA guideCore PSA diagnostic software; older supported Peugeot and Citroën vehicles may open PP2000 or Lexia within DiagBox.Opel / Vauxhall Vivaro and Zafira LifeK0 diagnostic generation and later supported vehicles in the September 2026 matrixOpel/Vauxhall DiagBox; many legacy Opel/Vauxhall models remain GDS2/SPS or Tech2/Tech2Win. See Opel model/year matrix summary.Toyota ProaceToyota Europe guide: Proace models; no year range stated on the tool-selection pageToyota Europe directs Proace to DiagBox while routing other Toyota/Lexus vehicles to GTS+ and new Supra to Toyota ISTA.Citroën Dispatch, Fiat Scudo, Vauxhall Vivaro C, Peugeot Expert and Toyota ProaceModel group in a 2022 towbar activation procedure; supplier document does not provide a complete tool-coverage year rangeDiagBox named for that trailer-function activation only; this does not imply general service or programming coverage for all five marques.Sources: PSA DiagBox independent operator guide; Opel/Vauxhall diagnostic matrix; Toyota Europe GTS+ user guide; ECS Electronics procedure.

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Revision 2: PSA DiagBox diagnostic system

DiagBox is the manufacturer diagnostic and repair software used for Peugeot, Citroën and DS vehicles. The PSA independent-operator installation guide describes VIN-specific access to ECU diagnosis, repair procedures and vehicle data also used by authorised repairers. Coverage and features depend on the vehicle and subscription. PSA DiagBox installation guide (2017).

Earlier systems

For supported older vehicles, DiagBox can launch Lexia for Citroën and Peugeot Planet 2000 (PP2000) for Peugeot. These names refer to diagnostic software for the respective marques, and do not mean all cars work with the same software release. SILIM PSA activation guide.

Opel and Vauxhall

Opel's independent-repairer conditions cover both Opel and Vauxhall. They distinguish PSA-conception vehicles managed by DiagBox from legacy vehicles managed by GDS2 or Tech2Win; programming access differs between these groups. Match the diagnostic system to the actual vehicle. Opel and Vauxhall diagnostic conditions, November 2025.

Interfaces and cloud software

DiagBox connects through a vehicle communication interface (VCI). Citroën lists DiagBox and DiagBoxCloud, and identifies certified interfaces including the ACTIA XS 2G and PSA interface. The manufacturer states that with a standard SAE J2534 Pass-Thru interface only reading functions are guaranteed, whereas a PSA interface offers all software functions. Exact capability, current support, subscriptions and authorisation should be checked against the vehicle and current service information. Citroën diagnostic conditions, November 2025.

See also Peugeot diagnostic tools and Citroën diagnostic tools.

Revision 7: PSA DiagBox diagnostic system

DiagBox is the manufacturer diagnostic and repair software used for Peugeot, Citroën and DS vehicles. The PSA independent-operator installation guide describes VIN-specific access to ECU diagnosis, repair procedures and vehicle data also used by authorised repairers. Coverage and features depend on the vehicle and subscription. PSA DiagBox installation guide (2017).

Earlier systems

For supported older vehicles, DiagBox can launch Lexia for Citroën and Peugeot Planet 2000 (PP2000) for Peugeot. These names refer to diagnostic software for the respective marques, and do not mean all cars work with the same software release. SILIM PSA activation guide.

Opel and Vauxhall

Opel's independent-repairer conditions cover both Opel and Vauxhall. They distinguish PSA-conception vehicles managed by DiagBox from legacy vehicles managed by GDS2 or Tech2Win; programming access differs between these groups. Match the diagnostic system to the actual vehicle; see Opel diagnostic systems. Opel and Vauxhall diagnostic conditions, November 2025.

Interfaces and cloud software

DiagBox connects through a vehicle communication interface (VCI). Citroën lists DiagBox and DiagBoxCloud, and identifies certified interfaces including the ACTIA XS 2G and PSA interface. The manufacturer states that with a standard SAE J2534 Pass-Thru interface only reading functions are guaranteed, whereas a PSA interface offers all software functions. Exact capability, current support, subscriptions and authorisation should be checked against the vehicle and current service information. Citroën diagnostic conditions, November 2025.

See also Peugeot diagnostic tools and Citroën diagnostic tools.

Earlier workshop equipment

Peugeot TEP 92 and DIAG 2000 and Citroën ELIT, Lexia and Proxia are documented earlier workshop tools; see early Peugeot and Citroën diagnostic tools.

Shared vehicle example: Fiat and Toyota

A 2022 ECS Electronics towbar wiring instruction names DiagBox for a trailer-function activation on its shared application group: Citroën Dispatch, Fiat Scudo, Vauxhall Vivaro C, Peugeot Expert and Toyota Proace. This is evidence for that supplier's specified procedure, not proof that every vehicle or function across these brands uses DiagBox. Confirm the specific vehicle, procedure and supported interface. ECS Electronics instructions, May 2022. See Fiat diagnostics and Toyota Techstream.

Toyota Europe's GTS+ independent-user guide labels a separate selection “Diagbox For PROACE models”; the same screen distinguishes GTS+ and Toyota ISTA for other specified applications. The guide does not establish that every PROACE variant, year or operation is supported: verify the relevant Toyota procedure and market. Toyota Europe GTS+ independent user guide, page 5; see Toyota Techstream and GTS+.

Cross-manufacturer model coverage examples

Marque / modelYear or generation statedWhat DiagBox is documented for
Peugeot, Citroën and DSVIN-specific independent repair coverage in the 2017 PSA guideCore PSA diagnostic software; older supported Peugeot and Citroën vehicles may open PP2000 or Lexia within DiagBox.
Opel / Vauxhall Vivaro and Zafira LifeK0 diagnostic generation and later supported vehicles in the September 2026 matrixOpel/Vauxhall DiagBox; many legacy Opel/Vauxhall models remain GDS2/SPS or Tech2/Tech2Win. See Opel model/year matrix summary.
Toyota ProaceToyota Europe guide: Proace models; no year range stated on the tool-selection pageToyota Europe directs Proace to DiagBox while routing other Toyota/Lexus vehicles to GTS+ and new Supra to Toyota ISTA.
Citroën Dispatch, Fiat Scudo, Vauxhall Vivaro C, Peugeot Expert and Toyota ProaceModel group in a 2022 towbar activation procedure; supplier document does not provide a complete tool-coverage year rangeDiagBox named for that trailer-function activation only; this does not imply general service or programming coverage for all five marques.

Sources: PSA DiagBox independent operator guide; Opel/Vauxhall diagnostic matrix; Toyota Europe GTS+ user guide; ECS Electronics procedure.