What Does P264D Mean?
The rocker arm actuator position sensor on Bank 1 is reporting abnormally high voltage. This indicates an electrical fault in the sensor circuit preventing accurate position monitoring.
Common Causes
35%
Open circuit in position sensor signal or ground wire
30%
Failed position sensor with internal open circuit
15%
Sensor signal wire short to voltage source
15%
Damaged or disconnected sensor connector
5%
PCM sensor input circuit or pull-up resistor failure
Diagnostic Steps
1
Step 1: Verify sensor connector is fully seated and locked; inspect for damage or corrosion
2
Step 2: Check for continuity in sensor signal and ground wires from connector to PCM
3
Step 3: Measure sensor output voltage at connector; if reading near reference voltage (5V), suspect open circuit
4
Step 4: Check for voltage on signal wire with sensor disconnected (should be ~5V from PCM pull-up)
5
Step 5: Replace position sensor or actuator assembly if wiring tests good but sensor shows open circuit
Estimated Repair Cost
$200 - $950
Parts + labor, varies by vehicle and location
The rocker arm actuator position sensor on Bank 1 is reporting abnormally high voltage. This indicates an electrical fault in the sensor circuit preventing accurate position monitoring.
The most common cause of P264D (A Rocker Arm Actuator Position Sensor Circuit High Bank 1) is: Open circuit in position sensor signal or ground wire
Typical repair costs for P264D range from $200 to $950, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive with limited performance. Engine will default to fixed valve timing affecting power and efficiency.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P264D to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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