The P2078 trouble code indicates a problem with the Intake Manifold Tuning (IMT) valve position sensor or switch circuit being high in Bank 1.
P2078 Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High Bank 1
Code symptoms P2078.
1. Activation of the Check Engine Light (CEL) or Malfunction Indicator Lamp (MIL).
2. Reduced engine performance or power output.
3. Rough idling or engine hesitation.
4. Decreased fuel efficiency.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P2078.
1. A malfunctioning Intake Manifold Tuning (IMT) valve position sensor or switch.
2. Issues with the wiring harness, such as shorts, opens, or damage.
3. Poor electrical connections or corroded terminals.
Code Solutions P2078.
1. Inspect the Intake Manifold Tuning (IMT) valve position sensor or switch for any signs of malfunction or damage. Replace the sensor or switch if necessary.
2. Check the wiring harness and connectors associated with the IMT valve position sensor circuit for any issues. Repair or replace damaged wiring as needed.
3. Ensure that all electrical connections are secure and free of corrosion.