For 1990-2009 cars

Condition | Action
--- | ---
Air inlet leaks or obstructions | Inspect for leaks or obstructions in the turbocharger inlet pipes/hoses.
Leaking charge air cooler/pipes/hoses | Inspect for leaks or obstructions in the charge air cooler/pipes/hoses.
Leaking or restricted exhaust system |

1. Inspect for a leak in the exhaust system.
2. Inspect for a restricted exhaust system.

Intake system leaks or obstructions |

1. Inspect for leaks in the intake manifolds.
2. Inspect for restrictions in the intake manifolds.