MechanicDB
Fault Family System: Powertrain (P-Codes) 20 SAE Codes

Rocker Arm Actuator Position Sensor

Diagnostic & Technical Explanation
Code P264A (A Rocker Arm Actuator Position Sensor Circuit Bank 1) sets when the ECM sees an open, shorted, implausible, or intermittent signal from the position sensor confirming a rocker arm actuator actually switched lift states or collapsed its rockers as commanded. Because the sensor confirms mechanical motion driven by oil pressure, an implausible reading can equally mean a healthy sensor watching a hydraulically stuck actuator, so oil pressure and condition must be verified before replacing the sensor.

These 20 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 20 times.

Codes in this family (20)

CodeDefinitionRepair coverage
P264AA Rocker Arm Actuator Position Sensor Circuit Bank 13 ranked fixes
P264BA Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 13 ranked fixes
P264CA Rocker Arm Actuator Position Sensor Circuit Low Bank 13 ranked fixes
P264DA Rocker Arm Actuator Position Sensor Circuit High Bank 13 ranked fixes
P264EA Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 13 ranked fixes
P265AB Rocker Arm Actuator Position Sensor Circuit Bank 13 ranked fixes
P265BB Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 13 ranked fixes
P265CB Rocker Arm Actuator Position Sensor Circuit Low Bank 13 ranked fixes
P265DB Rocker Arm Actuator Position Sensor Circuit High Bank 13 ranked fixes
P265EB Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 13 ranked fixes
P266AA Rocker Arm Actuator Position Sensor Circuit Bank 23 ranked fixes
P266BA Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 23 ranked fixes
P266CA Rocker Arm Actuator Position Sensor Circuit Low Bank 23 ranked fixes
P266DA Rocker Arm Actuator Position Sensor Circuit High Bank 23 ranked fixes
P266EA Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 23 ranked fixes
P267AB Rocker Arm Actuator Position Sensor Circuit Bank 23 ranked fixes
P267BB Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 23 ranked fixes
P267CB Rocker Arm Actuator Position Sensor Circuit Low Bank 23 ranked fixes
P267DB Rocker Arm Actuator Position Sensor Circuit High Bank 23 ranked fixes
P267EB Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 23 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here: