P266B — A Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2

What Does P266B Mean?

P266B is a diagnostic trouble code indicating: A Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P266B

⚠️ Check Engine Light (MIL) illuminated
⚠️ A Rocker Arm Actuator Position Sensor not operating within expected parameters
⚠️ Reduced efficiency or performance of related system
⚠️ Reduced engine performance

Common Causes

🔍 A Rocker Arm Actuator Position Sensor degraded or contaminated
🔍 Mechanical wear or binding in A Rocker Arm Actuator Position Sensor
🔍 Incorrect A Rocker Arm Actuator Position Sensor installed (wrong part number)
🔍 Related system mechanical issue affecting A Rocker Arm Actuator Position Sensor readings

Frequently Asked Questions

What does P266B mean?

P266B indicates: A Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2. The vehicle's computer has detected that the A Rocker Arm Actuator Position Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P266B?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P266B for extended periods may cause additional problems.

How much does it cost to fix P266B?

Repair costs for P266B typically range from $50 to $250, 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 clean A Rocker Arm Actuator Position Sensor
🔧 Replace degraded A Rocker Arm Actuator Position Sensor
🔧 Check for related mechanical issues affecting readings

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.

P266B: A Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2