OBD Guide
ENFRDEESPT

P00FD

Battery B State of Charge Performance

P00FD is an OBD-II diagnostic trouble code meaning: Battery B State of Charge Performance. Common causes: aging and degradation of optional battery b, auxiliary battery charging system malfunction. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine Light or Battery Management System Warning Light
  • Unstable operation of the start-stop system
  • Auxiliary Battery Low Warning
  • Possible problems with electrical consumers (lighting, media system)
  • On hybrids - reduced recovery efficiency and fuel consumption

Causes

  • Aging and degradation of optional battery B
  • Auxiliary battery charging system malfunction
  • Current leakage leading to constant battery discharge
  • Battery B current sensor (IBS) fault
  • Poor contact in the auxiliary battery charging circuit

How to Fix

  1. Read battery management system codes and data via diagnostic scanner
  2. Check the voltage of battery B at rest (normal 12.4–12.8V) and under load
  3. Perform a load test on battery B to check its actual condition
  4. Check battery B charging current with engine running/charging
  5. Measure the leakage current with the car turned off (the norm is less than 50 mA)
  6. If the battery degrades, replace it; If there is a problem with charging, diagnose the power management system

Related codes

P00FCP00FEP00FFP0A80B1000

Error P00FD by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P00FD code mean?

P00FD is an OBD-II diagnostic trouble code that indicates: Battery B State of Charge Performance

What causes a P00FD error code?

The most common causes of P00FD include: Aging and degradation of optional battery B; Auxiliary battery charging system malfunction; Current leakage leading to constant battery discharge; Battery B current sensor (IBS) fault.

How do I fix a P00FD diagnostic trouble code?

To fix P00FD: Read battery management system codes and data via diagnostic scanner. Check the voltage of battery B at rest (normal 12.4–12.8V) and under load. Perform a load test on battery B to check its actual condition. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P00FD?

Limited driving only, diagnose soon

How much does it cost to fix P00FD?

The estimated repair cost for P00FD is $56–278. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat