01Intermediate
Fuel control · 9 min
Lean at warm idle
2018 turbocharged gasoline sedan
MIL on; occasional rough warm idleOpen case file ↗
View plansMake the call.
Defend the decision.
Twelve interactive cases put scan evidence, operating context, uncertainty, safety, and repair cost in front of you. Every choice produces feedback. No real vehicle is commanded.
12case simulations
36scored decisions
$0parts ordered from a code alone
CHOOSE A FAILURE SCENEPractice without risking
Practice without risking
a customer vehicle.
Cases teach what the evidence establishes, the alternatives still in play, the next separating test, and what closes the loop.
02Intermediate
Combustion · 8 min
Misfire under load
2020 gasoline crossover
Hesitation during accelerationOpen case file ↗03Advanced
Electrical + network · 9 min
Low voltage, many modules
2017 luxury SUV
Multiple warnings after a cold startOpen case file ↗04Foundation
Buyer evidence · 7 min
Clean screen, incomplete monitors
2019 gasoline coupe offered for sale
Seller says it has no codesOpen case file ↗05Foundation
Cooling · 7 min
Temperature warning during traffic
2016 compact SUV
Temperature warning in stop-and-go trafficOpen case file ↗06Advanced
EV electrical · 9 min
EV low-voltage wake-up cascade
2022 battery-electric hatchback
Intermittent no-ready state and many alertsOpen case file ↗07Advanced
Hybrid battery · 10 min
Repeatable hybrid pack imbalance
2015 hybrid liftback
Reduced power and battery warningOpen case file ↗08Advanced
Transmission · 9 min
Commanded versus actual shift
2018 performance sedan
Flare during one upshiftOpen case file ↗09Intermediate
Starting + network · 8 min
Intermittent no-start
2014 gasoline hatchback
Occasionally cranks but will not startOpen case file ↗10Advanced
Custody evidence · 8 min
Premium vehicle return event
High-value limited-production vehicle
New warning after return from managed custodyOpen case file ↗11Foundation
Parts identity · 7 min
The cheaper wrong suffix
2021 European sport sedan
Source the correct replacement sensorOpen case file ↗12Intermediate
Repair verification · 8 min
The warning is gone—but did the repair work?
2019 diesel work van
Emissions warning repaired yesterdayOpen case file ↗STRUCTURED MASTERYCases become
Cases become
competence.
Pair the lab with ten role-based schools, forty applied lessons, and scored mastery checks.
Enter ScanWrench Academy ↗