P0439 — Catalyst Heater Circuit (Bank 2)

Powertrain (engine/transmission)

Catalyst Heater Circuit (Bank 2)

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Can I drive with P0439?

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

Frequently asked questions

What does fault code P0439 mean?

P0439 means Catalyst Heater Circuit (Bank 2).

Can I keep driving with P0439?

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

Related fault codes

• P0430 — Catalyst System Efficiency Below Threshold (Bank 2)
• P0431 — Warm Up Catalyst Efficiency Below Threshold (Bank 2)
• P0432 — Main Catalyst Efficiency Below Threshold (Bank 2)
• P0433 — Heated Catalyst Efficiency Below Threshold (Bank 2)
• P0434 — Heated Catalyst Temperature Below Threshold (Bank 2)
• P0435 — Catalyst Temperature Sensor (Bank 2, Sensor 1)
• P0436 — Catalyst Temperature Sensor Range/Performance (Bank 2, Sensor 1)
• P0437 — Catalyst Temperature Sensor Low Input (Bank 2, Sensor 1)
• P0438 — Catalyst Temperature Sensor High Input (Bank 2, Sensor 1)

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