P1459 — Heated Catalyst Heater Power Supply Open Circuit Bank 2

What Does P1459 Mean?

P1459 is a manufacturer-specific diagnostic trouble code: Heated Catalyst Heater Power Supply Open Circuit Bank 2. This code applies to BMW, VOLKSWAGEN, ACURA, HONDA, INFINITI vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1459

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic Heated Catalyst Heater Power Supply Open readings
⚠️ Related system operating intermittently
⚠️ Reduced engine performance

Common Causes

🔍 Wiring issue in Heated Catalyst Heater Power Supply Open circuit (damaged, chafed, or corroded)
🔍 Faulty Heated Catalyst Heater Power Supply Open connector or terminal
🔍 Failed Heated Catalyst Heater Power Supply Open
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does P1459 mean?

P1459 indicates: Heated Catalyst Heater Power Supply Open Circuit Bank 2. The vehicle's computer has detected that the Heated Catalyst Heater Power Supply Open is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1459?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1459 for extended periods may cause additional problems.

How much does it cost to fix P1459?

Repair costs for P1459 typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and repair Heated Catalyst Heater Power Supply Open wiring and connectors
🔧 Replace faulty Heated Catalyst Heater Power Supply Open

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P1459: Heated Catalyst Heater Power Supply Open Circuit Bank 2