Fuel and air

P2079 Intake manifold tuning valve: signal drops out at times (bank 1)

By: Diagno editorial team · Updated: 2026-10-15

P2079 means: Intake manifold tuning valve: signal drops out at times (bank 1). The intake manifold has swirl or runner flaps that help the engine breathe better at different revs. Drive gently and have the car checked soon. The most common repair costs about €45–90 in Estonia, depending on make and model.

Is it safe to drive?Get it checked soonDrive gently and have the car checked soon.

Wiring or connector repair€45–90parts and labour in Estonia, depending on make and model

What it means

The intake manifold has swirl or runner flaps that help the engine breathe better at different revs. The computer found that the flaps don't move correctly or their sensor is faulty. The signal drops out now and then. The most common cause is a loose connector or a chafed wire.

What you may notice

Engine light on
Less power at certain revs
Idle may be uneven

What could be wrong

1Connector loose, damp or corroded · Wiring or connector repair €45–90
2Wire broken or chafed · Wiring or connector repair €45–90
3Faulty actuator or sensor · Sensor replacement €80–160
4Engine computer fault (rare) · Control unit check and software €150–300

Repair difficulty: Moderate

What you can check yourself

First look at the connector and wiring: anything loose, melted or green with corrosion? On some engines a flap can break off and fall into the engine, so don't put this off for long. Best left to a workshop. It needs a diagnostic tool and experience.

How we fix it

We read the fault data on the diagnostic tool and check whether the fault is constant
We measure the circuit's supply, ground and signal
We repair the wire or replace the connector
If the wiring is fine, we replace the actuator or sensor

Standard SAE description: Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent Bank 1

This code usually comes with: Check engine lightSee what the light means →

Want a definite answer?

Bring the car to our workshop in Estonia for diagnostics. We read the fault codes, test the sensors and tell you what is wrong. Repair price depends on the work involved, generally €45 per hour.

Book a diagnostic check

Questions

What does fault code P2079 mean?

Intake manifold tuning valve: signal drops out at times (bank 1). The intake manifold has swirl or runner flaps that help the engine breathe better at different revs. The computer found that the flaps don't move correctly or their sensor is faulty. The signal drops out now and then. The most common cause is a loose connector or a chafed wire.

Can I drive with code P2079?

Drive gently and have the car checked soon.

How much does it cost to fix P2079?

It depends on the cause: wiring or connector repair €45–90; sensor replacement €80–160. Prices include labour at €45/h, depending on make and model.

How is P2079 fixed?

We read the fault data on the diagnostic tool and check whether the fault is constant. We measure the circuit's supply, ground and signal. We repair the wire or replace the connector. If the wiring is fine, we replace the actuator or sensor.

Based on AI combined with our hands-on workshop experience and knowledge. This information is general and prices are approximate (Estonian workshop rates). The same code can mean different things on different cars. Only an inspection of the car gives a definite answer.