OBD Guide
ENFRDEESPT

P0B8F

Hybrid/EV Battery Voltage Sense Q Circuit Intermittent/Erratic

P0B8F is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Voltage Sense Q Circuit Intermittent/Erratic. Common causes: oxidation or poor contact in sensor connectors, open or short circuit in the module wiring harness. Estimated repair cost: $50–200.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$50–200 (est.)

Symptoms

  • Unstable battery level indicators
  • Reduced power or jerky acceleration
  • Hybrid/EV system warnings appear
  • Random decrease in maximum speed
  • Incorrect operation of regenerative braking

Causes

  • Oxidation or poor contact in sensor connectors
  • Open or short circuit in the module wiring harness
  • Malfunction of the voltage sensor of the quarterly module
  • Measurement Circuit Grounding Problems
  • Mechanical damage to the wiring in the battery compartment

How to Fix

  1. Check the integrity of wires and connectors in the measurement circuit
  2. Clean the contacts of the voltage sensor connectors
  3. Check the insulation resistance of high-voltage wiring
  4. Test the voltage sensors on the quarterly module
  5. Repair only from an authorized dealer

Related codes

P0B8EP0B90P0B91

Error P0B8F by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0B8F code mean?

P0B8F is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Voltage Sense Q Circuit Intermittent/Erratic

What causes a P0B8F error code?

The most common causes of P0B8F include: Oxidation or poor contact in sensor connectors; Open or short circuit in the module wiring harness; Malfunction of the voltage sensor of the quarterly module; Measurement Circuit Grounding Problems.

How do I fix a P0B8F diagnostic trouble code?

To fix P0B8F: Check the integrity of wires and connectors in the measurement circuit. Clean the contacts of the voltage sensor connectors. Check the insulation resistance of high-voltage wiring. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0B8F?

Limited driving only, diagnose soon

How much does it cost to fix P0B8F?

The estimated repair cost for P0B8F is $50–200. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat