P2071
PPowertrainIntake Manifold Tuning Valve Stuck Closed (Bank 1)
What does this code mean?
Severity : LowP2071 indicates that the intake manifold tuning (IMT) valve on bank 1 is stuck closed. This device changes the air path inside the manifold to optimise torque at different engine speeds. The engine control module sees that the valve does not open when commanded.
Symptoms
- Check engine light on.
- Loss of power at high rpm.
- Weaker acceleration.
- Slightly higher fuel consumption.
Possible causes
- IMT valve sticking due to carbon deposits.
- Faulty electric or vacuum actuator.
- Vacuum leak or disconnected vacuum hose.
- Broken or detached linkage.
- Damaged wiring or connector.
Diagnosis and repair
- Inspect the actuator, linkage and vacuum hoses.
- Check the actuator connector and wiring.
- Command the valve with a scan tool and watch it move.
- Clean the mechanism or replace the actuator.
- Clear the code and road test across the rev range.
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Code
P2071
Category
Powertrain
Prefix
P
Standard
OBD-II / SAE J2012