P0661

Intake Manifold Tuning Valve Control Circuit Low Bank 1

Q: Is it safe to drive with P0661?

Generally yes — the engine starts and runs. You may feel a dip in power at some engine speeds, but it isn't an immediate breakdown risk. Fix it to restore full performance.

Q: Can I just clear P0661?

It returns until the circuit short or failed valve is repaired, and you'll keep losing the intake tuning benefit until then.

Intake manifold tuning (air) Generic OBD-II High

What it means

P0661 indicates the intake manifold tuning valve control circuit for bank 1 is reading low, typically a short to ground or a failed valve solenoid. The valve adjusts intake airflow for better torque, so you may notice reduced power at certain engine speeds and a check-engine light, though the engine still runs and starts.

High

Can I keep driving? Usually drivable — the engine still starts and runs, but you may notice reduced power or torque at certain engine speeds until it's fixed.

Real-world scan data

Seen in

178

scans in the past year

Found in

<0.1%

of scans

0.1%

of scans that found faults

Appears alongside · share of P0661 scans

P0662in 30.9% of scans

P0016in 30.3% of scans

P2122in 30.3% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Reduced power or torque, often noticeable at certain RPM
Rough idle
Slightly reduced fuel economy

Common causes

Most likely first

Short to ground in the intake manifold tuning valve control circuitLikely
Failed intake manifold tuning valve / solenoidCommon
Damaged or corroded wiring or connectorsCommon
Faulty engine control module (ECM)Less often

How to diagnose & fix

Work through it in order

Inspect the tuning valve connector and wiring for a short to ground or corrosion.
Measure the valve solenoid resistance against spec and confirm it's not internally shorted.
Replace the intake manifold tuning valve if the solenoid is out of range.
If the valve and wiring are good, check the ECM control driver. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0661?+

Generally yes — the engine starts and runs. You may feel a dip in power at some engine speeds, but it isn't an immediate breakdown risk. Fix it to restore full performance.

Can I just clear P0661?+

It returns until the circuit short or failed valve is repaired, and you'll keep losing the intake tuning benefit until then.

Read & clear P0661 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX