OBD Guide
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U019F

Lost Communication With Engine Coolant Pump Control Module

U019F is an OBD-II diagnostic trouble code meaning: Lost Communication With Engine Coolant Pump Control Module. Common causes: open or short circuit in the module power supply circuit, damage to the can bus wiring harness. 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 operation of the cooling system
  • Reduced engine performance
  • Errors in climate control operation

Causes

  • Open or short circuit in the module power supply circuit
  • Damage to the CAN bus wiring harness
  • Pump control module malfunction
  • Connector problems or contact corrosion
  • Failures in ECU software

How to Fix

  1. Check the integrity of the module power supply circuit
  2. Inspect the condition of the wiring harness and connectors
  3. Diagnose the pump control module
  4. Update ECU software if necessary
  5. Replace the control module if a fault is detected

Related codes

U019EU0100U0121

Error U019F by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U019F code mean?

U019F is an OBD-II diagnostic trouble code that indicates: Lost Communication With Engine Coolant Pump Control Module

What causes a U019F error code?

The most common causes of U019F include: Open or short circuit in the module power supply circuit; Damage to the CAN bus wiring harness; Pump control module malfunction; Connector problems or contact corrosion.

How do I fix a U019F diagnostic trouble code?

To fix U019F: Check the integrity of the module power supply circuit. Inspect the condition of the wiring harness and connectors. Diagnose the pump control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U019F?

Limited driving only, diagnose soon

How much does it cost to fix U019F?

The estimated repair cost for U019F is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat