OBD Guide
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P0625

Generator Field/F Terminal Circuit Low

P0625 is an OBD-II diagnostic trouble code meaning: Generator Field/F Terminal Circuit Low. Common causes: short circuit of terminal f wire to ground, voltage regulator malfunction (low signal). Estimated repair cost: $6–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • The Check Engine light comes on
  • Charging voltage is below normal (less than 13.5 V)
  • Slow battery discharge when the engine is running
  • The battery light on the dashboard comes on
  • Reduced lighting brightness under high load

Causes

  • Short circuit of terminal F wire to ground
  • Voltage regulator malfunction (low signal)
  • Open circuit in control circuit with short to ground
  • Poor contact in terminal F connector
  • Internal ECU malfunction (low output signal)

How to Fix

  1. Measure the charging voltage with the engine running
  2. Measure the voltage at terminal F of the generator with the engine running.
  3. Check terminal F wire for short to ground
  4. Check the generator connector - clean the contacts
  5. Check the voltage regulator - replace if faulty
  6. Measure the ECU output voltage on the control wire

Related codes

P0620P0622P0626P0562

Error P0625 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0625 code mean?

P0625 is an OBD-II diagnostic trouble code that indicates: Generator Field/F Terminal Circuit Low

What causes a P0625 error code?

The most common causes of P0625 include: Short circuit of terminal F wire to ground; Voltage regulator malfunction (low signal); Open circuit in control circuit with short to ground; Poor contact in terminal F connector.

How do I fix a P0625 diagnostic trouble code?

To fix P0625: Measure the charging voltage with the engine running. Measure the voltage at terminal F of the generator with the engine running.. Check terminal F wire for short to ground. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0625?

Limited driving only, diagnose soon

How much does it cost to fix P0625?

The estimated repair cost for P0625 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat