987 · Engine

P0345

Camshaft Position Sensor "A" Circuit (Bank 2)

HIGH SEVERITY

Fault in the Bank 2 camshaft position sensor signal.

SYMPTOMS

  • Check-engine light
  • Possible rough running
  • Reduced performance
  • Worse fuel economy

LIKELY CAUSES

  • Faulty camshaft position sensor
  • Open, shorted, or corroded wiring/connector
  • Loss of reference voltage or ground
  • ECM/PCM fault (rare)

DIAGNOSIS STEPS

  • Inspect the camshaft position sensor connector and wiring for damage or corrosion
  • Measure sensor resistance/voltage against specification
  • Check reference voltage and ground at the connector
  • Compare live data to a known-good value
  • Replace the sensor if out of spec

RELATED PARTS

  • Camshaft position sensor (Bank 2)
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