P0478 — Exhaust Pressure Control Valve High

Powertrain (engine/transmission)

Exhaust Pressure Control Valve High

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Can I drive with P0478?

You can usually drive home and book an inspection within a few days.

Frequently asked questions

What does fault code P0478 mean?

P0478 means Exhaust Pressure Control Valve High.

Can I keep driving with P0478?

You can usually drive home and book an inspection within a few days.

Related fault codes

• P0470 — Exhaust Pressure Sensor Circuit Malfunction
• P0471 — Exhaust Pressure Sensor Range/Performance
• P0472 — Exhaust Pressure Sensor Low Input
• P0473 — Exhaust Pressure Sensor High Input
• P0474 — Exhaust Pressure Sensor Intermittent
• P0475 — Exhaust Pressure Control Valve Malfunction
• P0476 — Exhaust Pressure Control Valve Range/Performance
• P0477 — Exhaust Pressure Control Valve Low
• P0479 — Exhaust Pressure Control Valve Intermittent

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