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1993-2001 SUBARU IMPREZA
2.2L H4•AWD•AUTOMATIC•gas
6 active safety recalls on this vehicle — view recalls
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Repairs0Labor506Torque4349Fluid9DTC1635Battery1Maintenance0Recalls6
P0393moderate severityPowertrain

Camshaft Position Sensor B Circuit High Input (Bank 2)

on 1993-2001 Subaru Impreza 2.2L H4 · AWD

What this code means

The PCM reads an abnormally high voltage from the Bank 2 camshaft position sensor B. This often points to a short to voltage or an open ground.

Symptoms

  • Hard starting
  • Rough running
  • MIL illuminated

Common causes

  • Short to voltage in wiring
  • Faulty camshaft position sensor
  • Open sensor ground
  • Corroded connector

Diagnostic steps

  1. Retrieve codes and freeze frame
  2. Measure sensor signal voltage
  3. Inspect for short to power and ground integrity
  4. Replace sensor or repair harness
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