P0080
Exhaust Valve Control Circuit High (Bank 2)
Powertrain Emission Controls Variable Valve Timing 🟡 Moderate — Fix within a week
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What This Actually Means
In plain language — no jargon

The engine computer detected that the exhaust valve control solenoid on Bank 2 is receiving too much electrical voltage, similar to a dimmer switch stuck at maximum brightness. This prevents proper valve timing and can reduce engine efficiency.

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Symptoms You May Notice
3 known symptoms for this code
Check Engine Light illuminated
Rough idle or hesitation during acceleration
Reduced fuel economy and power loss
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Embedded Systems Insight
What the ECU/ECM is actually computing

The ECM monitors the voltage and current supplied to the variable exhaust valve solenoid on Bank 2 during operation. It compares the measured signal voltage against expected thresholds to detect open circuits, short-to-power conditions, or solenoid resistance anomalies.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
Solenoid Control Voltage 0-12V (pulse-width modulated) Voltage consistently above 13.5V or shorted to battery
Solenoid Resistance 6-10 ohms Below 2 ohms or open circuit (infinite resistance)
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Wiring harness and connectors
Inspect Bank 2 exhaust valve solenoid connector for corrosion, loose pins, or damaged wires and repair as needed.
2
Exhaust valve solenoid
Disconnect the solenoid, test resistance with a multimeter, and replace if reading is outside 6-10 ohms range.
3
Engine control module (ECM)
Reprogram or replace ECM only if solenoid and wiring test normal.