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Home/DTC Codes/Citroën/C4/2020-2024 Electric/P0505
P0505

Idle Air Control System

2020-2024 Citroën C4 Electric 🇩🇪

Moderate SeverityPowertrain

Description

Malfunction in the idle air control (IAC) system.

Symptoms

  • Erratic idle speed
  • High idle
  • Low idle
  • Stalling at idle
  • Fluctuating RPM

Common Causes

  • Faulty IAC valve
  • Carbon buildup in IAC or throttle body
  • Vacuum leak
  • PCM issue

Diagnostic Steps

  1. Clean IAC valve and passages
  2. Clean throttle body
  3. Test IAC valve operation
  4. Check for vacuum leaks
  5. Monitor idle RPM with scan tool

Repair Notes

Clean IAC valve and throttle body first. Replace IAC if cleaning fails.

Related Codes

P0506Idle Air Control System RPM Lower Than ExpectedP0507Idle Air Control System RPM Higher Than ExpectedP0508Idle Air Control System Circuit LowP0509Idle Air Control System Circuit High

Other Powertrain Codes

P0505 on Other Vehicles

Citroën Berlingo

2018-2024 1.2L I3 PureTech

Citroën Berlingo

2018-2024 1.5L I4 BlueHDi

Citroën Berlingo

2018-2025 1.2L I3 Turbo PureTech 110

Citroën Berlingo

2018-2025 1.5L I4 Diesel BlueHDi 100

Citroën Berlingo III FR

2018-2025 1.2L I3 Turbo PureTech 110

Citroën Berlingo III FR

2018-2025 1.5L I4 Diesel BlueHDi 100

Citroën C1 III

2014-2022 1.0L I3 VTi 72

Citroën C1 III

2014-2022 1.2L I3 PureTech 82

Common Questions

What does code P0505 mean on a 2020-2024 Citroën C4?

P0505 stands for "Idle Air Control System". Malfunction in the idle air control (IAC) system.

What are the symptoms of P0505 on a Citroën C4?

Common symptoms of P0505 include: Erratic idle speed, High idle, Low idle, Stalling at idle, Fluctuating RPM.

What causes P0505 on a 2020-2024 Citroën C4?

Common causes of P0505 include: Faulty IAC valve, Carbon buildup in IAC or throttle body, Vacuum leak, PCM issue.

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