P2004 to P2023 and P2070 to P2079: intake runner flaps and tuning valve
The intake manifold runner control, or the intake manifold tuning valve, on bank 1 or bank 2, is stuck open or closed, has a circuit fault, or its position sensor or switch reads wrong.
SeverityLowLittle risk to the car, but the fault stays until it is repaired.
Can you keep driving?Safe to drive, book a checkWhat does P2004 mean?
Many engines have flaps in the intake runners, sometimes called swirl flaps, that make the air spin into the cylinders at low speed for better burning, and a tuning valve that changes the manifold's path. A motor or a vacuum actuator moves them, and a position sensor or switch confirms where they are. Where P0660 to P0665 cover the tuning valve's circuit, these codes say a flap or valve did not move or its position cannot be confirmed. Carbon is the usual reason, especially on diesels with exhaust gas recirculation.
What causes P2004?
- Flaps stuck with carbon, a common problem on diesels
- A failed flap actuator, motor or vacuum diaphragm
- A split vacuum hose to the actuator
- A broken linkage between the actuator and the flap shaft
- A failed position sensor or switch, or a damaged wire to it
What to check first for P2004
- Have the flaps commanded with a scan tool and watch whether the linkage moves end to end
- Inspect the vacuum hose and the actuator for splits and leaks
- Look at the linkage for a broken clip or arm
- Ask whether the engine has known swirl flap failures and what the maker recommends
Can you drive with P2004?
You can drive safely. Expect a little less pulling power or slightly rougher running; have it checked soon, and at once if you hear a rattle from the intake, because on some engines a broken flap can be drawn into the engine.
Since May 2018 an engine warning light that stays on is a major defect at the MOT, so the car fails until the fault is fixed.
Codes on this page
27
- P2004Intake Manifold Runner Control Stuck OpenBank 1
- P2005Intake Manifold Runner Control Stuck OpenBank 2
- P2006Intake Manifold Runner Control Stuck ClosedBank 1
- P2007Intake Manifold Runner Control Stuck ClosedBank 2
- P2008Intake Manifold Runner Control Circuit/OpenBank 1
- P2009Intake Manifold Runner Control Circuit LowBank 1
- P2010Intake Manifold Runner Control Circuit HighBank 1
- P2011Intake Manifold Runner Control Circuit/OpenBank 2
- P2012Intake Manifold Runner Control Circuit LowBank 2
- P2013Intake Manifold Runner Control Circuit HighBank 2
- P2014Intake Manifold Runner Position Sensor/Switch CircuitBank 1
- P2015Intake Manifold Runner Position Sensor/Switch Circuit Range/PerformanceBank 1
- P2016Intake Manifold Runner Position Sensor/Switch Circuit LowBank 1
- P2017Intake Manifold Runner Position Sensor/Switch Circuit HighBank 1
- P2018Intake Manifold Runner Position Sensor/Switch Circuit IntermittentBank 1
- P2019Intake Manifold Runner Position Sensor/Switch CircuitBank 2
- P2020Intake Manifold Runner Position Sensor/Switch Circuit Range/PerformanceBank 2
- P2021Intake Manifold Runner Position Sensor/Switch Circuit LowBank 2
- P2022Intake Manifold Runner Position Sensor/Switch Circuit HighBank 2
- P2023Intake Manifold Runner Position Sensor/Switch Circuit IntermittentBank 2
- P2070Intake Manifold Tuning (IMT) Valve Stuck Open
- P2071Intake Manifold Tuning (IMT) Valve Stuck Closed
- P2075Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit
- P2076Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Range/Performance
- P2077Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low
- P2078Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High
- P2079Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent
Related codes
Checked on · Rafael Soares
These are the generic meanings every manufacturer shares. Each brand adds its own detail, so your car's handbook, its service information and a qualified mechanic have the last word. OdoKeep has no connection with any manufacturer, and the app does not read codes from the car.
