Intake Manifold Tuning Valve Exceeded Learning Limit Bank 1
The required adaptation offset for the intake manifold tuning valve on bank 1 exceeds the calibrated learning window. Mechanism wear or sensor drift beyond compensation.
Affected components
- Intake manifold tuning valve b1
- Ecm
Common causes
- High likelihood: Mechanism worn at end-stops
- Medium likelihood: Position sensor reference drifted
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
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.