OBD Guide

P266D

A Rocker Arm Actuator Position Sensor Circuit High Bank 2

P266D is an OBD-II diagnostic trouble code meaning: A Rocker Arm Actuator Position Sensor Circuit High Bank 2. Common causes: short circuit to voltage in the sensor circuit, broken or damaged wiring. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Check engine light comes on
  • Deterioration in acceleration dynamics
  • Increased fuel consumption
  • Unstable engine operation at idle
  • The engine goes into emergency mode

Causes

  • Short circuit to voltage in the sensor circuit
  • Broken or damaged wiring
  • Malfunction of the rocker position sensor
  • Problems with the engine control unit (ECU)
  • Mechanical damage to the rocker arm actuator

How to Fix

  1. Check the integrity of the sensor wiring and connectors
  2. Measure resistance and voltage at the sensor
  3. Check the operation of the rocker arm actuator
  4. Replace the rocker position sensor if necessary
  5. Test the system after repair

Related codes

Error P266D by Vehicle Brand

FAQ

What does the P266D code mean?

P266D is an OBD-II diagnostic trouble code that indicates: A Rocker Arm Actuator Position Sensor Circuit High Bank 2

What causes a P266D error code?

The most common causes of P266D include: Short circuit to voltage in the sensor circuit; Broken or damaged wiring; Malfunction of the rocker position sensor; Problems with the engine control unit (ECU).

How do I fix a P266D diagnostic trouble code?

To fix P266D: Check the integrity of the sensor wiring and connectors. Measure resistance and voltage at the sensor. Check the operation of the rocker arm actuator. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P266D?

Yes, but get it checked soon

How much does it cost to fix P266D?

The estimated repair cost for P266D is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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