P0233 — Fuel Pump Secondary Circuit Intermittent

What Does P0233 Mean?

P0233 is a diagnostic trouble code indicating: Fuel Pump Secondary Circuit Intermittent. This code relates to the fuel injection system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P0233

⚠️ Check Engine Light (MIL) illuminated
⚠️ Fuel Pump Secondary signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Engine hesitation or stumble

Common Causes

🔍 Loose or intermittent connection at Fuel Pump Secondary
🔍 Wire chafing causing intermittent contact
🔍 Fuel Pump Secondary failing under heat or vibration
🔍 Corroded connector pins with partial contact

Frequently Asked Questions

What does P0233 mean?

P0233 indicates: Fuel Pump Secondary Circuit Intermittent. The vehicle's computer has detected that the Fuel Pump Secondary is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P0233?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P0233 for extended periods may cause additional problems.

How much does it cost to fix P0233?

Repair costs for P0233 typically range from $30 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 reseat all Fuel Pump Secondary connectors
🔧 Repair chafed or damaged wiring in Fuel Pump Secondary circuit
🔧 Replace Fuel Pump Secondary if failing intermittently

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.

P0233: Fuel Pump Secondary Circuit Intermittent