Manifold Absolute Pressure Sensor Range/Performance
The manifold absolute pressure (MAP) sensor signal is implausible relative to throttle position and engine speed. The ECU expects MAP to rise with throttle opening and fall under deceleration; deviation triggers the code.
Affected components
- Map sensor
- Vacuum hose
- Intake manifold
Common causes
- High likelihood: Vacuum hose to MAP sensor cracked or detached
- Medium likelihood: MAP sensor drifting outside specification
- Medium likelihood: Intake manifold gasket leaking
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.