Skip to main content

P1604 – Startability Malfunction

Want to confirm the real cause of this fault code?

A high‑quality OBD2 scanner gives you live data, fuel trims, sensor readings and freeze‑frame information — exactly what you need to verify the root cause of this code with confidence.

View Recommended Scanners

Symptoms

  • Hard starting
  • Stalling

Causes

  • Weak battery
  • Fuel delivery issue
  • Ignition fault

Diagnosis

  • Check fuel pressure
  • Inspect ignition
  • Measure battery voltage

Repair

  • Repair fuel system
  • Replace ignition parts
  • Replace battery
Hit enter to search or ESC to close