OBD Guide
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P2D39

Forced Hybrid/EV Battery Disconnect

P2D39 is an OBD-II diagnostic trouble code meaning: Forced Hybrid/EV Battery Disconnect. Common causes: breakage or damage to high-voltage cables, faulty high voltage relays or contactors. Estimated repair cost: $56–167.

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

Symptoms

  • CHECK ENGINE indicator lights up
  • Loss of power or transition to emergency mode
  • The car may not switch to electric mode
  • High voltage system error message on dashboard
  • High voltage battery not charging

Causes

  • Breakage or damage to high-voltage cables
  • Faulty high voltage relays or contactors
  • Problems with the Battery Management System (BMS)
  • Overheating or overloading of the high-voltage battery
  • Short circuit in high voltage circuit

How to Fix

  1. Visual inspection of high voltage cables and connectors
  2. Checking the condition of contactors and relays of the high voltage system
  3. Diagnostics of the battery management system using a scanner
  4. Checking the voltage and resistance of the high-voltage battery
  5. Repair only from an authorized dealer

Related codes

P2D40P2D38P0AA6

Error P2D39 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P2D39 code mean?

P2D39 is an OBD-II diagnostic trouble code that indicates: Forced Hybrid/EV Battery Disconnect

What causes a P2D39 error code?

The most common causes of P2D39 include: Breakage or damage to high-voltage cables; Faulty high voltage relays or contactors; Problems with the Battery Management System (BMS); Overheating or overloading of the high-voltage battery.

How do I fix a P2D39 diagnostic trouble code?

To fix P2D39: Visual inspection of high voltage cables and connectors. Checking the condition of contactors and relays of the high voltage system. Diagnostics of the battery management system using a scanner. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2D39?

Yes, but get it checked soon

How much does it cost to fix P2D39?

The estimated repair cost for P2D39 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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