Home › Codes › Sensor & timing codes

P0347: Camshaft Position Sensor A Circuit Low Input (Bank 2)

Severity: High A position-signal fault can cause stalling or failure to restart. Avoid normal use until diagnosed; arrange towing if the engine stalls, runs severely rough, or will not start reliably.

What does P0347 mean?

The bank 2 camshaft A signal is below its allowed range. A short to ground, sensor fault, or poor cranking electrical conditions can prevent reliable position information.

Generic OBD-II definition: Camshaft Position Sensor A Circuit Low Input (Bank 2). Confirm applicability in your vehicle service information.

Common causes

  • Bank 2 cam signal shorted to ground
  • Faulty sensor or connector
  • Weak battery or starter-related voltage drop

Symptoms

  • Hard starting
  • Reduced power
  • Stalling

Diagnostic focus

If both banks have low cam-input codes, check common power and cranking conditions before buying two sensors. A shared issue can affect otherwise separate signals.

Can I keep driving with P0347?

Severity: High A position-signal fault can cause stalling or failure to restart. Avoid normal use until diagnosed; arrange towing if the engine stalls, runs severely rough, or will not start reliably.

If the check engine light is flashing or the car runs badly, stop driving and have it checked.

Typical fixes

  • Test battery and starting voltage first if cranking is slow
  • Inspect bank 2 A sensor terminals
  • Check supply, return, and the low signal circuit

Related codes

P0342
Camshaft Position Sensor A Circuit Low Input (Bank 1 or Single Sensor)P0345
Camshaft Position Sensor A Circuit (Bank 2)P0346
Camshaft Position Sensor A Circuit Range/Performance (Bank 2)P0348
Camshaft Position Sensor A Circuit High Input (Bank 2)

Sources & review

Definitions and diagnostic background checked 2026-11-06. Generic guidance, not a substitute for the service procedure for your exact year, engine, and transmission.