OBD Guide
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P065D

Reductant System Malfunction Lamp Control Circuit

P065D is an OBD-II diagnostic trouble code meaning: Reductant System Malfunction Lamp Control Circuit. Common causes: burnt out adblue indicator lamp, open or short circuit in the lamp control circuit. Estimated repair cost: $2–44.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$2–44 (est.)

Symptoms

  • Check Engine light comes on
  • AdBlue indicator does not light up when the reagent level is low
  • No warning about the need to top up the reagent
  • Possible forced power limitation on some cars
  • Violation of environmental standards for NOx emissions

Causes

  • Burnt out AdBlue indicator lamp
  • Open or short circuit in the lamp control circuit
  • SCR system control module malfunction
  • ECU output stage malfunction
  • Oxidation of lamp control circuit connectors

How to Fix

  1. Check the operation of the AdBlue indicator when the ignition is turned on (lamp self-test)
  2. Replace the burnt out lamp if necessary
  3. Check the wiring and connectors of the SCR lamp control circuit
  4. Check the AdBlue level and make sure the SCR system is working properly
  5. Diagnostics of the SCR control module
  6. If necessary, repair wiring or replace components

Related codes

P0650P20E8P20F0P2002P228F

Error P065D by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P065D code mean?

P065D is an OBD-II diagnostic trouble code that indicates: Reductant System Malfunction Lamp Control Circuit

What causes a P065D error code?

The most common causes of P065D include: Burnt out AdBlue indicator lamp; Open or short circuit in the lamp control circuit; SCR system control module malfunction; ECU output stage malfunction.

How do I fix a P065D diagnostic trouble code?

To fix P065D: Check the operation of the AdBlue indicator when the ignition is turned on (lamp self-test). Replace the burnt out lamp if necessary. Check the wiring and connectors of the SCR lamp control circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P065D?

Limited driving only, diagnose soon

How much does it cost to fix P065D?

The estimated repair cost for P065D is $2–44. Actual cost depends on your vehicle, location, and labor rates.

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