Diagnostic Aids

1996 Buick Roadmaster LimitedSECTION Diagnostic Aids

If an injector is disconnected while engine is operating and if DTC P0200 is present, injector driver will be disabled for the entire ignition cycle. When injector driver is disabled, engine misfire will be apparent and a misfire related DTC will set.

Fig 1: DTC P0200 Schematic
G96D01812Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.