OBD Guide
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P059C

Active Grille Air Shutter A Position Sensor Circuit High

P059C is an OBD-II diagnostic trouble code meaning: Active Grille Air Shutter A Position Sensor Circuit High. Common causes: short circuit of the position sensor signal wire to power (+5 v or +12 v), internal sensor malfunction (produces maximum voltage). Estimated repair cost: $22–167.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–167 (est.)

Symptoms

  • Check Engine light is on
  • Blinds are fixed in one position (usually open)
  • Slight decrease in fuel efficiency
  • Slow engine warm-up in winter
  • Possible engine control errors due to changes in thermal conditions

Causes

  • Short circuit of the position sensor signal wire to power (+5 V or +12 V)
  • Internal sensor malfunction (produces maximum voltage)
  • Damage to wiring insulation with a short to adjacent circuits
  • Oxidation of the connector leading to signal distortion
  • Faulty blind control module

How to Fix

  1. Read all error codes, pay attention to the accompanying blinds codes
  2. Inspect the wiring and connector of the blind position sensor for insulation damage
  3. Measure the voltage of the sensor signal wire with the ignition on
  4. Check that the signal wire is not shorted to the power wires (+5 V, +12 V)
  5. Disconnect the sensor and check the voltage at the ECU connector - if it is high, there is a fault in the wiring
  6. Replace the position sensor or blind module if a sensor fault is confirmed
  7. Reset codes and check system operation

Related codes

P059AP059BP059DP059EP059F

Error P059C by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P059C code mean?

P059C is an OBD-II diagnostic trouble code that indicates: Active Grille Air Shutter A Position Sensor Circuit High

What causes a P059C error code?

The most common causes of P059C include: Short circuit of the position sensor signal wire to power (+5 V or +12 V); Internal sensor malfunction (produces maximum voltage); Damage to wiring insulation with a short to adjacent circuits; Oxidation of the connector leading to signal distortion.

How do I fix a P059C diagnostic trouble code?

To fix P059C: Read all error codes, pay attention to the accompanying blinds codes. Inspect the wiring and connector of the blind position sensor for insulation damage. Measure the voltage of the sensor signal wire with the ignition on. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P059C?

Do not drive — repair immediately

How much does it cost to fix P059C?

The estimated repair cost for P059C is $22–167. Actual cost depends on your vehicle, location, and labor rates.

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