OBD Guide
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P05AD

Active Grille Air Shutter B Position Sensor Circuit Intermittent

P05AD is an OBD-II diagnostic trouble code meaning: Active Grille Air Shutter B Position Sensor Circuit Intermittent. Common causes: damaged wiring with periodic breaks (insulation cracks), oxidized or unreliable sensor connector.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately

Symptoms

  • Check Engine light comes on, sometimes goes out on its own
  • Unpredictable position of the grille blinds
  • Intermittent decrease in fuel efficiency
  • The error appears only under certain conditions (frost, heat, vibration)
  • Difficulty in reproducing a fault during diagnostics

Causes

  • Damaged wiring with periodic breaks (insulation cracks)
  • Oxidized or unreliable sensor connector
  • Weak crimp of the terminal in the connector
  • Degradation of the resistive element of the position sensor
  • Vibration short in wiring harness

How to Fix

  1. Count errors and check data on the number of operations
  2. Inspect the sensor wiring harness along its entire length for abrasions and cracks.
  3. Push/pull the connector while the engine is running - check if the error is reproduced
  4. Clean and treat the connector contacts with a special compound
  5. Check the connector terminals for tightness
  6. If necessary, replace the sensor or repair the wiring harness
  7. Carry out a long test drive to confirm the fix

Related codes

P05AAP05ABP05ACP05AEP05B1

Error P05AD by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P05AD code mean?

P05AD is an OBD-II diagnostic trouble code that indicates: Active Grille Air Shutter B Position Sensor Circuit Intermittent

What causes a P05AD error code?

The most common causes of P05AD include: Damaged wiring with periodic breaks (insulation cracks); Oxidized or unreliable sensor connector; Weak crimp of the terminal in the connector; Degradation of the resistive element of the position sensor.

How do I fix a P05AD diagnostic trouble code?

To fix P05AD: Count errors and check data on the number of operations. Inspect the sensor wiring harness along its entire length for abrasions and cracks.. Push/pull the connector while the engine is running - check if the error is reproduced. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P05AD?

Do not drive — repair immediately

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See also: Russian version · NationStat