OBD Guide
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P1A4D

Hybrid Battery Current Sensor Performance

P1A4D is an OBD-II diagnostic trouble code meaning: Hybrid Battery Current Sensor Performance. Common causes: hybrid battery current sensor malfunction, damage to the wiring to the sensor. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced vehicle power
  • Switching the hybrid system into emergency mode
  • Deterioration in fuel consumption
  • Problems charging the hybrid battery

Causes

  • Hybrid battery current sensor malfunction
  • Damage to the wiring to the sensor
  • Poor contact in sensor connectors
  • Problems with the hybrid system control unit
  • Sensor contact corrosion

How to Fix

  1. Check the condition of the hybrid battery current sensor
  2. Check the integrity of wiring and connectors
  3. Clean the sensor contacts from corrosion
  4. Replace current sensor if necessary
  5. Repair only from an authorized dealer

Related codes

P1A4CP1A4EP0A7F

FAQ

What does the P1A4D code mean?

P1A4D is an OBD-II diagnostic trouble code that indicates: Hybrid Battery Current Sensor Performance

What causes a P1A4D error code?

The most common causes of P1A4D include: Hybrid battery current sensor malfunction; Damage to the wiring to the sensor; Poor contact in sensor connectors; Problems with the hybrid system control unit.

How do I fix a P1A4D diagnostic trouble code?

To fix P1A4D: Check the condition of the hybrid battery current sensor. Check the integrity of wiring and connectors. Clean the sensor contacts from corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1A4D?

Do not drive — repair immediately

How much does it cost to fix P1A4D?

The estimated repair cost for P1A4D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat