OBD Guide
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P277D

Electric/Auxiliary Transmission Fluid Pump B Motor Over Temperature

P277D is an OBD-II diagnostic trouble code meaning: Electric/Auxiliary Transmission Fluid Pump B Motor Over Temperature. Common causes: transmission fluid pump motor malfunction, problems with the pump's electrical circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The Check Engine light comes on
  • Gear shifting problems
  • Reduced transmission performance
  • Unusual noises from the transmission area
  • Transmission transition to emergency mode

Causes

  • Transmission fluid pump motor malfunction
  • Problems with the pump's electrical circuit
  • Clogged or low transmission fluid
  • Pump overload due to mechanical problems in the transmission
  • Malfunction of temperature sensor or control module

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Diagnose the electrical circuit of the pump for breaks and short circuits
  3. Check the resistance and operation of the pump motor
  4. Scan the system for related trouble codes
  5. If necessary, replace the pump motor or its components.

Related codes

P277CP277EP277F

Error P277D by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P277D code mean?

P277D is an OBD-II diagnostic trouble code that indicates: Electric/Auxiliary Transmission Fluid Pump B Motor Over Temperature

What causes a P277D error code?

The most common causes of P277D include: Transmission fluid pump motor malfunction; Problems with the pump's electrical circuit; Clogged or low transmission fluid; Pump overload due to mechanical problems in the transmission.

How do I fix a P277D diagnostic trouble code?

To fix P277D: Check the level and condition of the transmission fluid. Diagnose the electrical circuit of the pump for breaks and short circuits. Check the resistance and operation of the pump motor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P277D?

Limited driving only, diagnose soon

How much does it cost to fix P277D?

The estimated repair cost for P277D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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