Error code
OBD2 P0661
OBD2P0661
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Intake Manifold Tuning Valve Control Circuit Low.
Severity
moderateCan be driven, but performance may suffer and fuel efficiency could decrease.
Summary
P0661 indicates an issue with the intake manifold tuning valve control circuit on bank 1 of the engine, specifically that there is abnormally low input voltage.
Common Causes
- Damaged or shorted wiring and connectors in the tuning valve's control circuit
- Defective intake manifold tuning valve
- Binding or sticking tuning valve flap
- Defective tuning valve actuator/solenoid
- Malfunctions in sensors involved in the tuning valve’s operation
Fixes
- Repair or replace damaged wiring and connectors in the tuning valve's control circuit.
FAQ
What does P0661 mean?
P0661 indicates an issue with the intake manifold tuning valve control circuit on bank 1 of the engine, specifically low input voltage.
Where is the P0661 sensor located?
The intake manifold tuning valve is typically located at the midpoint of the intake manifold where it would logically be split into two equal halves for a V-type engine.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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