Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 1)
The P2077 code means the vehicle's onboard diagnostic system has detected: Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 1). This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $75 - $500+ (parts and labor; an integrated IMT valve / intake manifold runner control assembly is far costlier than a wiring or connector repair)
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What Are the Symptoms of P2077?
- Check Engine Light on
- Possible loss of low-end torque or high-rpm power
- Engine may feel less responsive under load
- Often no noticeable drivability change
- Rough running in some cases if the tuning valve cannot change position
What Causes P2077? (Most Likely First)
- Short to ground in the IMT valve position sensor signal circuit Very High
- Failed IMT valve position sensor High
- Damaged or corroded connector / loose pins at the IMT valve Moderate
- PCM fault (rare) Low
Can I Still Drive with P2077?
Yes, but fix soon. P2077 is rated moderate severity. It is not an immediate stop-driving fault, but it will not clear itself — book the repair rather than ignoring the light.
Frequently Asked Questions
What does P2077 mean?
P2077 indicates: Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 1). The ECM has detected a low-voltage signal from the IMT valve position sensor or its circuit.
Is P2077 serious?
It is usually not an emergency. The car often drives normally, but the intake manifold tuning valve may not switch runner geometry correctly, costing some low-end torque or top-end power. Repair it to restore performance and clear the light.
Can I diagnose this myself?
Basic diagnosis is possible with a scan tool and multimeter. Inspect the IMT valve connector and wiring for a short to ground, back-probe the position-sensor signal, and compare it to the manufacturer specification before replacing the valve.
Mechanics Guide Step-by-step diagnosis, and what most sources get wrong
How Do You Diagnose P2077?
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Scan for related IMT valve codes (P2070, P2071, P2075, P2078, P2079) and record freeze-frame data
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Inspect the IMT valve connector and wiring for damage, corrosion, or a short to ground
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Back-probe the IMT valve position sensor signal circuit and compare voltage to the manufacturer spec
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Replace the IMT valve / position sensor if wiring and connector test good but the signal stays out of range
Common Misconceptions / Fact Check
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Commonly claimedMany databases label P2077 an 'Intake Manifold Air Temperature Sensor' circuit code.
VerifiedP2077 is Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 1) -- a runner-control valve fault. It does not monitor intake air temperature; that is a separate sensor with its own code family.
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Which Vehicles Commonly Get P2077?
- 2013-2020 Ford F-150 3.5L EcoBoost
- 2010-2019 Ram 1500 5.7L
- 2012-2020 Toyota Camry 2.5L
- 2011-2019 Hyundai Sonata 2.4L
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