P0080 moderate

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.

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Keep driving?: Short distances only
DIY difficulty: hard
Estimated cost: $80 - $450 (parts and labor)

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Common Symptoms

Check Engine Light on
Engine runs poorly at idle
Reduced power output
May notice exhaust smell in cabin

Probable Causes (Ranked by Likelihood)

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

Step-by-Step Diagnostic Procedure

Measure exhaust VVT solenoid resistance. Infinite ohms confirms an open coil.
Check connector is fully seated. Heat cycling can cause connectors near exhaust to loosen over time.
Test wiring continuity from PCM to solenoid connector. Repair any open circuits.
Swap with intake VVT solenoid (if same part number) to confirm the solenoid is the failure point.

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.