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DTC code page

P0345: Camshaft Position Sensor A Circuit (Bank 2)

Quick answer: The ECU sees a fault in the Bank 2 camshaft position sensor A circuit or its signal quality.

Drivers also search this fault as bank 2 camshaft position sensor A circuit, bank 2 cam sensor code, cam sensor bank 2 circuit fault.

Severity: high Family: powertrain Related paths: 13
Meaning

What P0345 usually means

P0345 means the Bank 2 camshaft position sensor A signal is missing, implausible, or electrically unreliable. It lives in the same diagnostic neighborhood as P0340, but the Bank 2 label matters because it narrows the problem to one side of a V-engine or multi-bank layout and helps separate a local signal fault from broader timing-system trouble.

Fast triage

Start here before chasing parts

  • Scan first: save freeze-frame and pending codes before clearing anything.
  • Confirm the complaint: compare the stored code with current drivability symptoms.
  • Use context: trims, live data, and related codes usually narrow the fault faster than guesswork.
  • Work simplest to hardest: leaks, connectors, maintenance items, and known patterns before expensive components.
Initial checks

What to check first

  • Confirm the engine actually has more than one bank so the Bank 2 label is being interpreted correctly.
  • Inspect the Bank 2 sensor connector and nearby harness before replacing the sensor.
  • If P0016, P0017, or other timing-related codes are present, keep Bank 2 mechanical timing in the picture.
Driving risk

Can you keep driving?

P0345 can create long-crank, stalling, or no-start behavior, so treat it as a high-priority drivability fault.

High urgency: If symptoms are active, reduce driving and diagnose quickly before secondary damage builds.
Likely causes

Common causes behind this code

  • Failed Bank 2 camshaft position sensor A
  • Connector or harness fault on the Bank 2 cam sensor circuit
  • Oil intrusion or corrosion reducing signal quality at the connector
  • Mechanical timing drift or phaser trouble on Bank 2
  • Low system voltage or poor ground integrity during cranking

Cause phrases often tied to this code: bank 2 cam sensor, wiring issue, timing chain problem, connector corrosion, oil contamination.

Diagnostic order

Suggested workflow

  1. Verify battery voltage and healthy cranking speed.
  2. Locate the Bank 2 camshaft position sensor A and inspect connector fit, oil contamination, and rubbed wiring.
  3. Check whether scan data shows a missing or erratic Bank 2 cam signal during cranking or hot restart.
  4. Test the sensor and circuit if the fault is not obvious from the visual inspection.
  5. Inspect mechanical timing on Bank 2 if correlation or VVT codes remain after electrical repairs.
Avoid guesswork

Common mistakes

  • Replacing the wrong bank sensor because Bank 2 location was guessed instead of confirmed.
  • Treating P0345 like a universal cam sensor code and missing the one-bank clue.
  • Ignoring timing correlation codes that suggest the signal problem may be mechanical as well as electrical.
Repair path

Practical fix guidance

  • Fix the confirmed Bank 2 sensor, wiring, voltage, or timing issue first instead of replacing both cam sensors on principle.
  • After repair, verify normal sync and restart behavior on repeated hot and cold starts.
Vehicle context

Affected brands in this MVP

Brand hubs help broaden internal linking now and can evolve into make-specific diagnostic notes later.

Aliases and common searches

English phrases tied to P0345

Useful when the driver knows the wording but not the exact DTC yet.

  • bank 2 camshaft position sensor A circuit
  • bank 2 cam sensor code
  • cam sensor bank 2 circuit fault
Related search intent

Queries this page can answer naturally

  • P0345 code meaning
  • what does P0345 mean
  • bank 2 cam sensor symptoms
  • bank 2 camshaft sensor circuit
FAQ

Quick questions about P0345

Is P0345 the same as P0340?

Not exactly. P0340 is the broad cam-circuit fault, while P0345 narrows that fault to sensor A on Bank 2.

Can P0345 cause a no-start?

Yes on some engines, especially when the ECU depends heavily on a valid Bank 2 cam signal for sync.

Does P0345 always mean the sensor is bad?

No. Wiring, oil-soaked connectors, low voltage, and Bank 2 timing issues can all trigger it.