P266E Fault Code

A Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 2

• What does that mean?
• Symptoms
• Causes
• Solutions

The P266E fault code indicates an issue with the Rocker Arm Actuator Position Sensor Circuit for Bank 2. This sensor plays a crucial role in controlling the variable valve timing (VVT) and optimizing engine performance. When the circuit experiences intermittent or erratic behavior, it can lead to reduced engine efficiency and increased emissions.

What are the symptoms of the P266E code?

The symptoms associated with a P266E code may include:

• Poor engine performance or stalling.
• Trouble starting the engine or rough idling.
• Decreased fuel efficiency.
• Illuminated Check Engine Light (CEL) on the dashboard.
• Potential misfiring or irregular engine noises.

What causes the P266E code?

Common causes of the P266E fault code include:

• Faulty rocker arm actuator position sensor.
• Damaged or corroded wiring or connectors in the sensor circuit.
• Internal engine problems affecting the rocker arm assembly.
• Issues with the Engine Control Module (ECM) that can lead to incorrect readings.

How to fix P266E?

To resolve the P266E fault code, consider the following steps:

• Inspect and repair any damaged wiring or connectors related to the rocker arm actuator position sensor.
• Replace the faulty rocker arm actuator position sensor if necessary.
• Clear the fault codes and test the circuit again to confirm functionality.
• Check the ECM for any software updates or issues that may be causing incorrect readings.