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P34A4 Powertrain

A Camshaft Position Actuator Temperature Sensor Circuit Bank 1

Generic electrical fault on the temperature sensor of the intake camshaft position actuator on bank 1 (used by ECU to thermally protect the VVT actuator from overheating).

Affected components

  • Cam actuator a temp sensor b1
  • Sensor wiring

Common causes

  • High likelihood: Temperature 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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