P1626 — Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction

What Does P1626 Mean?

P1626 is a manufacturer-specific diagnostic trouble code: Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction. This code applies to OTHER, FORD, LINCOLN, MERCURY, BUICK 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 P1626

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C readings
⚠️ Related system operating intermittently
⚠️ Reduced engine performance

Common Causes

🔍 Wiring issue in Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C circuit (damaged, chafed, or corroded)
🔍 Faulty Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C connector or terminal
🔍 Failed Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does P1626 mean?

P1626 indicates: Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction. The vehicle's computer has detected that the Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1626?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1626 for extended periods may cause additional problems.

How much does it cost to fix P1626?

Repair costs for P1626 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 Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C wiring and connectors
🔧 Replace faulty Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C

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.

P1626: Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction