P05F2 — Reductant Pump Supply Voltage Circuit Stuck Off

What Does P05F2 Mean?

P05F2 is a diagnostic trouble code indicating: Reductant Pump Supply Voltage Circuit Stuck Off. This code relates to the vehicle speed and idle control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P05F2

⚠️ Check Engine Light (MIL) illuminated
⚠️ Reductant Pump Supply Voltage not activating when commanded
⚠️ Related system not available
⚠️ Erratic idle speed

Common Causes

🔍 Reductant Pump Supply Voltage mechanically stuck or seized
🔍 No power reaching Reductant Pump Supply Voltage actuator
🔍 Open circuit in Reductant Pump Supply Voltage control wiring

Frequently Asked Questions

What does P05F2 mean?

P05F2 indicates: Reductant Pump Supply Voltage Circuit Stuck Off. The vehicle's computer has detected that the Reductant Pump Supply Voltage is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P05F2?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P05F2 for extended periods may cause additional problems.

How much does it cost to fix P05F2?

Repair costs for P05F2 typically range from $50 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

🔧 Check power supply to Reductant Pump Supply Voltage
🔧 Replace seized or failed Reductant Pump Supply Voltage
🔧 Repair open circuit in Reductant Pump Supply Voltage control wiring

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.

P05F2: Reductant Pump Supply Voltage Circuit Stuck Off