OBD Guide

P0A8A

14 Volt Power Module Current Sensor A Circuit Intermittent

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced performance of the hybrid system
  • The car may go into emergency mode
  • Possible problems with charging the high-voltage battery
  • Intermittent operation of the power plant

Causes

  • Poor contact in the current sensor connector
  • Open or short circuit in the sensor circuit
  • Power module current sensor malfunction
  • Problems with the 14V power module
  • Corroded contacts or damaged wiring

How to Fix

  1. Check the continuity of the current sensor circuit
  2. Inspect connectors and contacts for damage
  3. Check the resistance and signal of the current sensor
  4. If necessary, replace the current sensor or power module
  5. Clean contacts and eliminate corrosion

Related codes

Error P0A8A by Vehicle Brand