Powertrain, generic · Computer and auxiliary outputs

P065F Intake Manifold Tuning Valve Performance Bank 2

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

The intake manifold tuning valve switches the manifold length or plenum connection with engine speed (more torque low, more power high); it is not the runner or swirl flap (IMRC, P2004 ff). P065F is the function check of the bank 2 valve: it does not follow its command, detected via a position sensor or the intake pressure pulsation (GM patent). Bank 2 codes require a V-engine manifold with two separately switched valves; many V engines use a single central valve between the plenums, and no manufacturer document available to us uses this code, so the description follows bank 1. A stuck valve causes a torque gap in one rev band and can make the banks fill unevenly. Bank 2 circuit faults are P0663–P0665.

Likely causes

Bank 2 valve or shaft sooted or stiff
Linkage between actuator and valve broken or unhooked
Bank 2 actuator faulty internally
Manifold or vacuum leak

Symptoms

  • Check engine light (depending on the maker)
  • Torque gap in one rev band
  • Noise from the intake manifold

Repair estimate

DifficultyMediumDIY possible
Parts and labour€80–600
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

intake manifold tuning valvevalve actuatoractuator wiring

Related codes

P065EP0663P0664P0665P2070P2071

References: law.cornell.edu, patents.google.com, patents.google.com.