OBD Guide

P0A73

Generator Phase V Current Low

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–222 (est.)

Symptoms

  • Battery charge indicator is on
  • Poor performance of electrical equipment
  • Low battery
  • Unstable engine operation
  • Intermittent failures of electronic systems

Causes

  • Generator malfunction
  • Alternator belt problems
  • Broken or damaged wires
  • Voltage regulator malfunction
  • Short circuit in generator circuit

How to Fix

  1. Check the condition of the alternator belt
  2. Diagnose a generator on a stand
  3. Check wiring integrity
  4. Replace the voltage regulator if necessary
  5. Replace generator if faulty

Related codes

Error P0A73 by Vehicle Brand