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P0078 — Exhaust Valve Control Solenoid Circuit (Bank 1)

Exhaust valve control solenoid circuit fault on bank 1.

Severity: MediumRepair: $50-$400Difficulty: Medium

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Common symptoms of P0078

Common causes of P0078

Repair cost & difficulty

Typical cost to fix P0078: $50-$400 · Difficulty: Medium

Pro tip: Same oil-dependent systems as intake valve control.

Vehicles commonly affected

Engines with variable exhaust valve control

Related trouble codes

P0079P0080

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.