English-first OBD-II diagnostics Static, fast, focused lookup pages
CD CheckDTC Garage-grade fault lookup
Browse codes Try AI Diagnose
Home / Codes / P0016
DTC code page

P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)

Quick answer: The ECU thinks crank and cam timing signals are no longer synchronized the way they should be.

Drivers also search this fault as crank cam correlation code, timing correlation bank 1 sensor A, cam crank not synchronized.

Severity: high Family: powertrain Related paths: 17
Meaning

What P0016 usually means

P0016 is a correlation code, not just a sensor code. The module is comparing crankshaft position to camshaft position and seeing a relationship that is outside the allowed range. That can come from stretched timing components, a slipped reluctor, VVT issues, or sometimes a sensor/wiring problem that makes the signals appear out of sync.

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

  • Treat startup rattles, no-start complaints, and recent timing work as major clues.
  • Check oil level and condition because a VVT control problem can sometimes trigger correlation faults.
  • Do not assume a simple sensor swap fixes a true timing drift problem.
Driving risk

Can you keep driving?

P0016 deserves high urgency. Some vehicles will barely run or may not start at all, and true timing drift can become expensive fast.

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

Common causes behind this code

  • Timing chain stretch or slipped timing alignment
  • Cam phaser stuck or not returning properly
  • Crank or cam sensor signal problem creating false correlation errors
  • Low oil pressure affecting variable valve timing control
  • Mechanical timing error after engine work

Cause phrases often tied to this code: timing chain stretch, slipped timing, cam phaser issue, sensor signal problem, low oil pressure.

Diagnostic order

Suggested workflow

  1. Verify oil level and condition before deeper timing-system diagnosis.
  2. Check for related VVT or cam sensor codes that may help narrow the cause.
  3. Use scan data or scope patterns to compare crank and cam synchronization if available.
  4. If symptoms are strong or noise is present, inspect mechanical timing alignment.
Avoid guesswork

Common mistakes

  • Throwing a cam sensor at the problem without testing timing correlation.
  • Continuing to crank or drive a vehicle with obvious timing noise.
  • Ignoring the possibility of recent repair error after chain or head work.
Repair path

Practical fix guidance

  • If mechanical timing has slipped, fix that first; sensors will not correct a chain problem.
  • If signal quality is poor, repair wiring or sensor issues and confirm clean synchronization data.
  • Re-verify starting, idle, and cam/crank sync after the repair.
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 P0016

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

  • crank cam correlation code
  • timing correlation bank 1 sensor A
  • cam crank not synchronized
Related search intent

Queries this page can answer naturally

  • P0016 code meaning
  • what does P0016 mean
  • crank cam correlation symptoms
  • timing chain stretch code
FAQ

Quick questions about P0016

Is P0016 just a bad sensor?

Not necessarily. It often points to timing correlation, which can be mechanical as well as electrical.

Can low oil cause P0016?

Low or dirty oil can contribute when VVT control is involved, but true mechanical timing drift is still a major possibility.

Should I keep driving with P0016?

That is risky, especially if the engine runs poorly, rattles on startup, or struggles to start.