Intake Air System Leak
The ECU has detected a discrepancy between commanded throttle/intake conditions and the resulting MAP/MAF that points to unmetered air entering after the throttle body. On turbocharged engines this often means a cracked or disconnected boost pipe between turbo and intake; on naturally aspirated engines, a hole in the intake manifold or hose.
Affected components
- Intake manifold
- Intercooler pipe
- Throttle body
Common causes
- High likelihood: Boost pipe disconnected or cracked
- High likelihood: Intake hose split
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.