AI Diesel Tech
P0342OBD-IISENSOR

Camshaft Position Sensor A Circuit Low Input (Bank 1)

Common Symptoms

  • Check Engine Light illuminated
  • Hard starting or extended cranking
  • Rough idle or engine stalling
  • Poor fuel economy
  • Lack of power or hesitation during acceleration
  • Engine may run in limp mode

Most Likely Root Causes

  • Faulty camshaft position sensor
  • Damaged or corroded wiring harness to camshaft position sensor
  • Poor electrical connection at sensor connector
  • Shorted sensor circuit to ground
  • Failed PCM or ECM

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Component Location

The camshaft position sensor is typically located near the cylinder head, camshaft cover, or timing chain cover on Bank 1.

Manufacturer Notes

Some manufacturers use magnetic Hall-effect sensors that are sensitive to timing cover oil leaks causing contamination and signal loss.

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