Powertrain Definition only Lights the check engine lamp

P265E: B Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1

Standardized SAE J2012 code · P26xx — Computer and output circuits

What does P265E mean?

The position sensor signal for actuator B on bank 1 jumps or drops out intermittently. Usually a loose connector or a chafed wire.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Common causes

  • High Sensor connector not fully seated
  • Medium Harness chafed against valve cover
  • Low Connector with intermittent contact under vibration

Likelihood is a general estimate across vehicles; your make and model may differ.

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