P20FC — Reductant Pump B Control Circuit Low

What Does P20FC Mean?

P20FC is a diagnostic trouble code indicating: Reductant Pump B Control Circuit Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P20FC

⚠️ Check Engine Light (MIL) illuminated
⚠️ Reductant Pump B reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Open or broken wire in Reductant Pump B circuit
🔍 Poor ground connection at Reductant Pump B
🔍 Faulty Reductant Pump B with no output signal
🔍 Disconnected or loose Reductant Pump B connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P20FC mean?

P20FC indicates: Reductant Pump B Control Circuit Low. The vehicle's computer has detected that the Reductant Pump B is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P20FC?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P20FC for extended periods may cause additional problems.

How much does it cost to fix P20FC?

Repair costs for P20FC typically range from $20 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

🔧 Repair broken wire or restore ground in Reductant Pump B circuit
🔧 Clean and secure Reductant Pump B connector and ground points
🔧 Replace failed Reductant Pump B

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.

P20FC: Reductant Pump B Control Circuit Low