OBD Guide
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P26D1

Engine Coolant Pump Control Module System Voltage High

P26D1 is an OBD-II diagnostic trouble code meaning: Engine Coolant Pump Control Module System Voltage High. Common causes: coolant pump control module malfunction, problems with the charging system (alternator, voltage regulator). Estimated repair cost: $56–167.

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

Symptoms

  • Check Engine Light Is On
  • Engine overheating
  • Unstable engine operation
  • Reduced engine performance
  • Coolant pump noise

Causes

  • Coolant pump control module malfunction
  • Problems with the charging system (alternator, voltage regulator)
  • Short circuit in pump control circuit
  • Wiring harness damage
  • Battery problems

How to Fix

  1. Check the voltage in the charging system
  2. Diagnose the coolant pump control module
  3. Check the integrity of the pump control circuit
  4. Inspect the wiring harness for damage
  5. If necessary, replace the pump control module

Related codes

P26D0P26D2P26D3

Error P26D1 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P26D1 code mean?

P26D1 is an OBD-II diagnostic trouble code that indicates: Engine Coolant Pump Control Module System Voltage High

What causes a P26D1 error code?

The most common causes of P26D1 include: Coolant pump control module malfunction; Problems with the charging system (alternator, voltage regulator); Short circuit in pump control circuit; Wiring harness damage.

How do I fix a P26D1 diagnostic trouble code?

To fix P26D1: Check the voltage in the charging system. Diagnose the coolant pump control module. Check the integrity of the pump control circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P26D1?

Limited driving only, diagnose soon

How much does it cost to fix P26D1?

The estimated repair cost for P26D1 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat