Skip to main content

P1602 – ECM/PCM Power Input Low

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

  • No start
  • Stalling
  • Warning lights

Causes

  • Weak battery
  • Bad ground
  • Wiring issue

Diagnosis

  • Measure voltage
  • Inspect grounds
  • Check wiring

Repair

  • Repair wiring
  • Improve grounding
  • Replace battery
Hit enter to search or ESC to close