What is the P2078 fault code What is the description of Intake Manifold Regulator Position Sensor / Switch Circuit High malfunction (Bank 1)? How do I fix the P2078 fault code What are the symptoms and causes for the P2078 fault code
P2078 OBD-2 Fault Code Definition
Intake Manifold Regulator Vave Position Sensor (IMT/Switch circuit High Bank 1)
Tuning Valve Position Sensor for Intake Manifold / Switch Circuit High Bank 1
What is P2078 Engine Failure Code?
This code occurs when the Engine Control Module, (ECM), or the Powertrain Control Module, (PCM), detects a problem with the IMT valve position.
The ECM turns on the check engine lamp when it receives high voltage signals from the IMT. This could be caused either by shorted or defective wire connectors.
The symptoms of the P2078 Fault code
- – Engine fault light illuminates
- – Insufficient power at high engine speeds
- – Isolation and fluctuations
Connect a scanner to the OBD II connector to check the codes. The majority of vehicles can be used to control the IMT valve motor’s movement. This should be done while the scan tool monitors the data. To physically inspect the sensor and valve, it is necessary to disassemble them.
IMT valves fall into one of two categories: vacuum or electric. The connections sockets for vacuum-operated valves are often clogged or damaged. A misdiagnosis may occur if the vacuum lines are not checked thoroughly.
It is necessary to take the cover off the stem of your valve. It can break the valve cover, but it will still work and cause many problems.
How serious is the P2078 Engine Fault code?
Although the P2078 fault codes can cause some driving issues for the driver it doesn’t affect the engine and life safety.
Possible Causes and Repairs for P2078 Engine Fault Code
To fix the P2078 error code, you can follow these steps.
Visually inspect the connectors and harness. Look for broken or protruding terminals.
- – Defective Intake Valve Position Sensor/Switch
- – An insufficient or short electrical connection in the Intake Manifold Regulator Vave Position Sensor wiring harness
- – Leakage or obstruction of vacuum lines
- – Defective intake manifold regulator valve (IMTV).
- – Defective Intake Manifold Control Flow Control (IMRC).
- – Defective Engine Control Module (ECM)
This system is engineered to increase fuel consumption and improve performance in modern vehicles. The IMT valve directs intake air flow in two directions: the longer path at low speeds and shorter at high speeds. This has an impact on the MAF (Mass Air Flow), sensor data. The ECM uses the MASS or MASS air flow sensor to calculate the fuel to air ratio.
