18502/P2070/008304

18502/P2070/008304 - Intake Manifold Tuning Valve (Bank 1): Stuck Open

Possible Symptoms

• Malfunction Indicator Light (MIL) ON
• Reduction of power at higher RPMs

Possible Causes

• Vacuum leak
• Faulty Intake Manifold Tuning (IMT) Valve Position Sensor (G513)
• Intake Manifold Runner binding or sticking

Possible Solutions

• Replace failed vacuum line
• Check Intake Manifold Tuning (IMT) Valve Position Sensor (G513) and wiring, see repair manual.

Special Notes

• When found in 2005-2008 Audi A4 and A6 with BKH 3.2L FSI engines:
  • Please see TSB 24-08-76, 01-14-76 or TPI 2019485 https://static.nhtsa.gov/odi/tsbs/2014/SB-10065428-2280.pdf NHTSA
  • If the ports on the intake manifold (which supply intake flap/ tuning valve solenoids) have insufficient vacuum, make sure the thermal door actuator solenoid under the air filter housing isn't broken/leaking. This can cause a leak in the circuit connected to the mechanical vacuum pump on the right cylinder head resulting in P2006,P2007 and P2070.

• When found in 2012-2016 Audi with 3.0 TFSI, please see TPI 2050329
  • Vacuum operated water pump may draw excessive vacuum causing intake manifold flaps to malfunction. Updated vacuum hose for water pump.
    • https://static.nhtsa.gov/odi/tsbs/2018/MC-10133286-9999.pdf NHTSA