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P03F2

B Camshaft Profile Actuator C Control Circuit Low (Bank 1)

B Camshaft Profile Actuator C Control Circuit Low (Bank 1): the control-circuit voltage is below the expected range. This relates to engine timing; a fault can cause rough running, a no-start, or timing errors.

  • Check engine light: Yes
  • Emissions related: Yes
  • Repair difficulty: medium

Symptoms

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

Common causes

Ordered by how often each turns out to be the cause.

  • Short to groundCommon
  • Connector pins corroded - high contact resistanceLess likely
  • Harness chafing through insulationLess likely

Parts involved

  • Camshaft Position Actuator

P03F2 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.