OBD Guide

P266A

A Rocker Arm Actuator Position Sensor Circuit Bank 2

P266A is an OBD-II diagnostic trouble code meaning: A Rocker Arm Actuator Position Sensor Circuit Bank 2. Common causes: malfunction of the rocker arm drive position sensor, open or short circuit in sensor wiring. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Reduced engine power
  • Unstable engine idling
  • Deteriorating fuel economy
  • Check Engine Light Illuminates
  • Possible misfires

Causes

  • Malfunction of the rocker arm drive position sensor
  • Open or short circuit in sensor wiring
  • Poor contact in the sensor connector
  • Engine control unit (ECU) malfunction
  • Problems with the VVT system

How to Fix

  1. Check the sensor wiring and connectors for damage
  2. Checking the Rocker Arm Actuator Position Sensor to Specifications
  3. Replacing a faulty sensor
  4. Checking and repairing wiring or connectors
  5. Checking the operation of the VVT system

Related codes

Error P266A by Vehicle Brand

FAQ

What does the P266A code mean?

P266A is an OBD-II diagnostic trouble code that indicates: A Rocker Arm Actuator Position Sensor Circuit Bank 2

What causes a P266A error code?

The most common causes of P266A include: Malfunction of the rocker arm drive position sensor; Open or short circuit in sensor wiring; Poor contact in the sensor connector; Engine control unit (ECU) malfunction.

How do I fix a P266A diagnostic trouble code?

To fix P266A: Check the sensor wiring and connectors for damage. Checking the Rocker Arm Actuator Position Sensor to Specifications. Replacing a faulty sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P266A?

Yes, but get it checked soon

How much does it cost to fix P266A?

The estimated repair cost for P266A is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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