Fuel and air

P1516 Intake runner control: input error (bank 1)

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

P1516 means: Intake runner control: input error (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 repair usually costs about €80–700 in Estonia. The most common cause: flaps stuck with carbon.

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

Typical repair cost€80–700parts and labour in Estonia

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.

This is a make-specific code (Ford). The exact meaning can vary by model and year.

What you may notice

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

What could be wrong

1Flaps stuck with carbon
2Broken flap actuator or linkage
3Vacuum hose or solenoid
4Position sensor or wiring

Repair difficulty: Moderate

What you can check yourself

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 check flap movement with the diagnostic tool
We check the actuator, hoses and wiring
We clean the manifold or replace the actuator or manifold

Standard SAE description: IMRC Input Error (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 P1516 mean?

Intake runner control: input error (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.

Can I drive with code P1516?

Drive gently and have the car checked soon.

How much does it cost to fix P1516?

Roughly €80–700 in Estonia. The price depends on exactly what has failed and on the car.

How is P1516 fixed?

We check flap movement with the diagnostic tool. We check the actuator, hoses and wiring. We clean the manifold or replace the actuator or manifold.

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.