Exhaust Valve Control Solenoid Circuit High (Bank 1)
The P0080 code means the vehicle's onboard diagnostic system has detected: Exhaust Valve Control Solenoid Circuit High (Bank 1). This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $80 - $450 (parts and labor)
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What Are the Symptoms of P0080?
- Check Engine Light on
- Engine runs poorly at idle
- Reduced power output
- May notice exhaust smell in cabin
What Causes P0080? (Most Likely First)
- Open circuit in exhaust VVT solenoid wiring Very High
- Burned out exhaust VVT solenoid coil High
- Loose or disconnected connector Moderate
- PCM driver circuit open Low
Can I Still Drive with P0080?
Short distances only. P0080 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does circuit high mean on P0080?
Circuit high means the PCM detects an open circuit condition. No current can flow through the exhaust VVT solenoid, so the system cannot control exhaust valve timing.
Can the exhaust VVT solenoid burn out?
Yes, the solenoid coil can fail open from heat exposure, age, or voltage spikes. The proximity to exhaust heat accelerates wear on these components.
Will P0080 cause a failed emissions test?
Yes, the illuminated Check Engine Light will fail an emissions test, and the VVT system not functioning correctly can also increase tailpipe emissions.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P0080?
-
Measure exhaust VVT solenoid resistance. Infinite ohms confirms an open coil.
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Check connector is fully seated. Heat cycling can cause connectors near exhaust to loosen over time.
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Test wiring continuity from PCM to solenoid connector. Repair any open circuits.
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Swap with intake VVT solenoid (if same part number) to confirm the solenoid is the failure point.
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 P0080?
- 2010-2020 Honda Civic
- 2012-2019 Kia Forte
- 2008-2018 Toyota Prius
- 2011-2020 Hyundai Elantra
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