P06B1: Sensor Power Supply A Circuit Low
Severity
Medium
System
Computer and Output Circuits
What Does P06B1 Mean?
P06B1 is a diagnostic trouble code indicating: Sensor Power Supply A Circuit Low. This code relates to the computer and output circuits system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Symptoms of P06B1
- ⚠️ Check Engine Light (MIL) illuminated
- ⚠️ Sensor Power Supply A reading at zero or minimum value
- ⚠️ Related system not functioning or in fail-safe mode
- ⚠️ Multiple system malfunctions
Common Causes
- 🔍 Open or broken wire in Sensor Power Supply A circuit
- 🔍 Poor ground connection at Sensor Power Supply A
- 🔍 Faulty Sensor Power Supply A with no output signal
- 🔍 Disconnected or loose Sensor Power Supply A connector
- 🔍 Blown fuse in related circuit
Frequently Asked Questions
What does P06B1 mean?
P06B1 indicates: Sensor Power Supply A Circuit Low. The vehicle's computer has detected that the Sensor Power Supply A is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P06B1?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P06B1 for extended periods may cause additional problems.
How much does it cost to fix P06B1?
Repair costs for P06B1 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 Sensor Power Supply A circuit
- 🔧 Clean and secure Sensor Power Supply A connector and ground points
- 🔧 Replace failed Sensor Power Supply A
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.
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