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2021 TOYOTA C-HR
2.0L I4•FWD•CVT•gas•M20A-FKS
1 active safety recall on this vehicle — view recalls
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Repairs0Labor476Torque3059Fluid7DTC1942Battery1Maintenance0Recalls1
P0344high severityPowertrain

Camshaft Position Sensor A Circuit Intermittent (Bank 1 or Single Sensor)

on 2021 Toyota C-HR 2.0L I4 · FWD

What this code means

The camshaft position sensor signal is intermittent on bank 1. This can cause stalling, hard starts, and cam/crank correlation issues.

Symptoms

  • Intermittent stalling
  • Hard starting
  • Rough running

Common causes

  • Loose CMP connector
  • Intermittent wiring fault
  • Failing camshaft sensor
  • Damaged reluctor/tone wheel

Diagnostic steps

  1. Scope CMP signal under vibration
  2. Wiggle-test sensor harness
  3. Inspect connector for corrosion
  4. Check tone wheel and air gap
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