OBD Guide
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P1F0E

Battery Charging Voltage System Isolation Lost

P1F0E is an OBD-II diagnostic trouble code meaning: Battery Charging Voltage System Isolation Lost. Common causes: damage to the charging system wiring, corrosion of battery terminals or connections. Estimated repair cost: $6–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–167 (est.)

Symptoms

  • Check engine light is on
  • Low battery
  • Unstable operation of electrical equipment
  • Generator power reduction
  • Difficulty starting the engine

Causes

  • Damage to the charging system wiring
  • Corrosion of battery terminals or connections
  • Generator malfunction
  • Leakage current in the system
  • Incorrect connection of additional equipment

How to Fix

  1. Check the integrity of the charging system wiring
  2. Clean battery terminals and connections from corrosion
  3. Check the functionality of the generator
  4. Measure the leakage current in the system
  5. Check that additional equipment is connected correctly

Related codes

P0562P0563P0620

FAQ

What does the P1F0E code mean?

P1F0E is an OBD-II diagnostic trouble code that indicates: Battery Charging Voltage System Isolation Lost

What causes a P1F0E error code?

The most common causes of P1F0E include: Damage to the charging system wiring; Corrosion of battery terminals or connections; Generator malfunction; Leakage current in the system.

How do I fix a P1F0E diagnostic trouble code?

To fix P1F0E: Check the integrity of the charging system wiring. Clean battery terminals and connections from corrosion. Check the functionality of the generator. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1F0E?

Limited driving only, diagnose soon

How much does it cost to fix P1F0E?

The estimated repair cost for P1F0E is $6–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat