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P23E9 Powertrain

P23E9 — Camshaft A Position Signal Output Circuit Open Bank 2

Camshaft A Position Signal Output Circuit Open Bank 2: the circuit is open. This relates to engine timing; a fault can cause rough running, a no-start, or timing errors.

General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.

Affected components

  • Cam position signal a b2 output

Possible causes to check

These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.

  • Open in output wiring
  • Pin pushed back out of connector body
  • Cracked solder joint inside the module or sensor

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

Related codes

Sources

Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.

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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