The P2071 trouble code indicates an issue with the intake manifold tuning (IMT) valve being stuck closed in bank 1.
P2071 Intake Manifold Tuning (IMT) Valve Stuck Closed Bank 1
Code symptoms P2071.
1. Check Engine Light (CEL) or Malfunction Indicator Lamp (MIL) illumination.
2. Decreased engine performance, particularly at high RPMs.
3. Rough idling or stalling when the vehicle is at a standstill.
4. Reduced fuel efficiency.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P2071.
1. Carbon buildup or debris obstructing the IMT valve mechanism.
2. Malfunctioning IMT valve actuator.
3. Wiring harness or connector issues affecting the IMT valve control circuit.
4. Faulty engine control module (ECM).
Code Solutions P2071.
1. Inspect the IMT valve and intake manifold for any carbon buildup or debris. Clean or replace the IMT valve as needed.
2. Test the IMT valve actuator to ensure proper functioning. Replace the actuator if it’s faulty.
3. Check the wiring harness and connectors associated with the IMT valve control circuit for any damage or corrosion. Repair or replace damaged components.
4. Perform a comprehensive diagnostic scan to identify any issues with the engine control module (ECM). Replace the ECM if required.