P2671 — Actuator Supply Voltage B Circuit High

What Does P2671 Mean?

P2671 is a diagnostic trouble code indicating: Actuator Supply Voltage B Circuit High. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2671

⚠️ Check Engine Light (MIL) illuminated
⚠️ Actuator Supply Voltage B reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Reduced engine performance

Common Causes

🔍 Short to voltage in Actuator Supply Voltage B wiring harness
🔍 Corroded or water-damaged Actuator Supply Voltage B connector
🔍 Faulty Actuator Supply Voltage B outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P2671 mean?

P2671 indicates: Actuator Supply Voltage B Circuit High. The vehicle's computer has detected that the Actuator Supply Voltage B is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2671?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2671 for extended periods may cause additional problems.

How much does it cost to fix P2671?

Repair costs for P2671 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

🔧 Inspect and repair Actuator Supply Voltage B wiring for short to voltage
🔧 Clean or replace corroded Actuator Supply Voltage B connector
🔧 Replace faulty Actuator Supply Voltage B

1
Find your vehicle above
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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.

P2671: Actuator Supply Voltage B Circuit High