P1548 – Throttle Motor Power Supply Intermittent (Nissan)

Description

The ECM detected intermittent power supply to the throttle control motor.

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

  • Hesitation
  • Unstable idle

Causes

  • Loose connector
  • Wiring issue
  • Relay fault

Diagnosis

  • Check connectors
  • Inspect wiring
  • Test relay

Repair

  • Repair wiring
  • Replace relay