OBD Guide
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P1F03

Battery Charger Control Module Supply Voltage Performance

P1F03 is an OBD-II diagnostic trouble code meaning: Battery Charger Control Module Supply Voltage Performance. Common causes: battery charging control module malfunction, wiring problems or bad contacts. Estimated repair cost: $56–167.

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

Symptoms

  • Check Engine light comes on
  • Problems starting the engine
  • Battery low
  • Unstable operation of the vehicle's electrical system
  • Reduced battery charging efficiency

Causes

  • Battery charging control module malfunction
  • Wiring problems or bad contacts
  • Generator malfunction
  • Damaged fuses or relays
  • Low voltage in the on-board network

How to Fix

  1. Check the voltage at the battery terminals
  2. Inspect the wiring and contacts of the charging control module
  3. Check the functionality of the generator
  4. Replace the charging control module if necessary
  5. Check and replace fuses or relays if necessary

Related codes

P1F04P1F02

FAQ

What does the P1F03 code mean?

P1F03 is an OBD-II diagnostic trouble code that indicates: Battery Charger Control Module Supply Voltage Performance

What causes a P1F03 error code?

The most common causes of P1F03 include: Battery charging control module malfunction; Wiring problems or bad contacts; Generator malfunction; Damaged fuses or relays.

How do I fix a P1F03 diagnostic trouble code?

To fix P1F03: Check the voltage at the battery terminals. Inspect the wiring and contacts of the charging control module. Check the functionality of the generator. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1F03?

Yes, but get it checked soon

How much does it cost to fix P1F03?

The estimated repair cost for P1F03 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat