P266C

A Rocker Arm Actuator Position Sensor Circuit Low Bank 2

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$39–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Rough engine idling
Increased fuel consumption
Gear shifting problems (if the system affects the transmission)

Causes

Open or short circuit in the sensor circuit
Malfunction of the rocker actuator position sensor
Problems with the actuator solenoid valve
Mechanical failure of the rocker arm actuator
Engine ECU malfunction (rare)

How to Fix

Check the integrity of the sensor circuit (wire harness, connectors)
Test the resistance and signal of the actuator position sensor
Check the operation of the actuator solenoid valve
Inspect the mechanical part of the rocker arm actuator for damage
If necessary, replace the sensor or rocker arm actuator

Related codes

P266D P266B P266A