Vector Diagnostics HD
Request Access

Professional heavy-duty diagnostic software

Dealer-level diagnostics without the dealer tool

Clear diagnostic direction for heavy-duty trucks. Read faults, view live data, compare signals, and move toward the right repair without chasing parts.

✓ Works with Nexiq USB-Link 2 ✓ J1939 / J1708 ready ✓ Built for heavy-duty trucks
Request Access See Screens
Vector Diagnostics HDCommand Center
Connection: Nexiq USB-Link 2
Connected
Engine Speed
1187RPM
Vehicle Speed
0MPH
Coolant Temp
185°F
Batt Voltage
14.2V

Active Faults

2Active0Inactive

Live Data Stream

System Status

EngineOK

ABSOK

TransmissionOK

AftertreatmentWatch

Instrument ClusterOK

VIN: 1XP7D89X77D697318 Engine: C15 Protocol: J1939 Data logging: On
▣
Professional Grade

Serious layout, clear visibility, and enough density to feel like a real working diagnostic tool.

↯
Fast Direction

See what matters first so you spend less time guessing and more time moving toward the right repair.

▥
Live Data

Compare changing signals, fault lists, and system state in one focused view.

⚙
Built for Techs

Built around the bay, not around marketing copy.

Heavy-duty platforms Vector is built to support

CATDetroitCumminsPACCARVolvoFreightlinerKenworthMack

Screens

Purpose-built interface for serious diagnostics

A closer look at the working Vector environment: live signals, fault isolation, ranked checks, and verification all staying on the same diagnostic path.

Vector Command CenterHeavy-duty diagnostic session
Connected · J1939 · USB-Link 2
Dashboard Command Center Overview Live values · active faults · next best check
Engine Speed1187RPM
Boost32PSI
Coolant184°F
Battery13.9V
Fault Isolation MatrixGuided checks
PowerGroundSignalCANHarnessConnector
Priority FaultsRanked by impact
  • SPN 97 / FMI 3Active

    Water in fuel voltage low. Start at connector, then verify power and return before replacing parts.

  • 102/4Watch

    Boost signal does not follow commanded load during throttle sweep.

  • 110/2Logged

    Coolant signal rationality check. Compare sensor value against physical temperature.

Recommended next best check Inspect water-in-fuel sensor circuit and connector integrity before replacing components.

Workflow

Diagnostics that work the way the shop works.

Connect, scan, analyze, diagnose, and verify with less wasted motion and less guessing.

1Connect

Start the session fast and bring the truck into a serious diagnostic environment.

2Scan

Surface faults and system state quickly without dealer-software clutter.

3Analyze

Read live signals and compare what the truck is doing against what it should be doing.

4Diagnose

Move toward likely cause with clearer next-step direction and less random parts swapping.

5Verify

Confirm the repair with confidence before the truck goes back out.

Request Vector Access

Built for shops that need direction, not noise.

Request access for your shop or fleet. Tell us what trucks, adapters, and diagnostic needs matter most.

Heavy-duty trucks Fleet / shop workflow RP1210 adapter focus