DIY-safe
Cylinder Misfire — P0301
Engine · DIY-safe · 35 min
Diagnosis library
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Filter by system, severity, or OBD-II code. Each guide pairs a 30-second fix video with tools, torque values, and a safety flag where it matters.
Safety-critical: requires certified mechanic
Pro required
Front Brake Pads Worn
Brakes · Pro required · 90 min
DIY-safe
Weak Battery on Cold Crank
Battery · DIY-safe · 20 min
Caution
Inner Edge Tire Wear
Tires · Caution · 30 min
Safety-critical: requires certified mechanic
Pro required
ABS Warning Light — C0035
Lights · Pro required · 60 min
DIY-safe
AC Blowing Warm — Low R-134a
AC · DIY-safe · 25 min
Safety-critical: requires certified mechanic
Pro required
Transmission Slipping
Transmission · Pro required · professional only
DIY-safe
O2 Sensor Lean — P0131
Sensors · DIY-safe · 45 min
DIY-safe
Rough Idle from Vacuum Leak
Engine · DIY-safe · 40 min
Safety-critical: requires certified mechanic
Pro required
Rear Rotor Warped
Brakes · Pro required · 90 min
Caution
Alternator Not Charging
Battery · Caution · 50 min
DIY-safe
TPMS Reset After Inflation
Tires · DIY-safe · 10 min
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