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P34AC Powertrain

A Camshaft Position Actuator Position Sensor A Circuit Bank 1

Generic electrical fault on the position sensor of the intake camshaft actuator on bank 1 (closed-loop feedback for VVT angle).

Affected components

  • Cam actuator a pos sensor b1
  • Sensor wiring

Common causes

  • High likelihood: Position sensor failed

Possible symptoms

  • Check engine light on
  • Power loss especially in mid-rpm range
  • Possible rough idle or stalling
  • Increased fuel consumption

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • This code can affect emissions
  • A drive cycle may be required after repair

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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