PowertrainP0505
CautionSeverity: Caution - get it checked when you can
Idle Air Control System
Key terms: SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
The engine idle control system is not holding a steady idle.
2Common causes
- Carbon build-up in the throttle body or idle air passage
- Faulty idle air control valve
- Vacuum leak
- Faulty throttle position sensor
- Damaged wiring or connector
3Can I drive?
Usually safe to drive. The engine may idle rough, stall when stopping, or idle too high; have it checked soon.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 39
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0505 | Idle Air Control System SAE | Powertrain |
| BAIC Motor | P0505 | Idle Air Control System Brand | Powertrain |
| Mercedes-Benz | P0505 | Idle Air Control System SAE | Powertrain |
| BMW | P0505 | Idle-speed deviation Brand | Powertrain |
| BYD | P0505 | Idle control system Brand | Powertrain |
| Chery | P0505 | IAC error Brand | Powertrain |
| Daewoo | P0505 | Idle air control Brand | Powertrain |
| Daihatsu | P0505 | ISCV system Brand | Powertrain |
| DFFS | P0505 | Idle Air Control System Brand | Powertrain |
| DFFX | P0505 | Idle control system Brand | Powertrain |
| DFXK | P0505 | Idle Air Control System Brand | Powertrain |
| EOBD | P0505 | Idle control system Brand | Powertrain |
| Ford | P0505 | Idle Air Control System SAE | Powertrain |
| Geely | P0505 | Idle control system Brand | Powertrain |
| GM | P0505 | Idle control system Brand | Powertrain |
| Great Wall | P0505 | IAC error Brand | Powertrain |
| Hafei | P0505 | Idle control system Brand | Powertrain |
| Holden | P0505 | Idle Speed Incorrect Brand | Powertrain |
| Honda | P0505 | Idle Air Control System SAE | Powertrain |
| Hyundai | P0505 | Idle Air Control System SAE | Powertrain |
| Isuzu | P0505 | Idle Air Control System SAE | Powertrain |
| Land Rover | P0505 | Idle Air Control System SAE | Powertrain |
| Maserati | P0505 | Idle control system Brand | Powertrain |
| Mazda | P0505 | Idle Air Control System SAE | Powertrain |
| Mitsubishi | P0505 | Idle control system Brand | Powertrain |
| Nissan | P0505 | IACV/AAC valve Brand | Powertrain |
| Opel | P0505 | Idle control system Brand | Powertrain |
| Perodua | P0505 | ISCV system Brand | Powertrain |
| Peugeot | P0505 | Idle Air Control System SAE | Powertrain |
| Porsche | P0505 | Leerlaufregelung Brand | Powertrain |
| Proton | P0505 | Idle control system Brand | Powertrain |
| Saab | P0505 | Idle Control System Brand | Powertrain |
| MG (SAIC) | P0505 | Idle Air Control System Brand | Powertrain |
| Smart | P0505 | Idle Air Control System SAE | Powertrain |
| Sprinter | P0505 | Idle Air Control System SAE | Powertrain |
| Subaru | P0505 | Idle Air Control System SAE | Powertrain |
| Suzuki | P0505 | Idle air control system malfunction Brand | Powertrain |
| Tata | P0505 | Idle Air Control System Brand | Powertrain |
| Toyota | P0505 | Idle speed control solenoid valve fault Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 3
These 7-character codes are manufacturer-specific variants of P0505 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P050500 | Die Leerlaufdrehzahlregelung hat Funktionsstörung. Brand | Powertrain |
| SsangYong | P050500 | Idle control fail Brand | Powertrain |
| Mercedes-Benz | P050502 | Die Leerlaufdrehzahlregelung hat Funktionsstörung. Es liegt ein allgemeiner Signalfehler vor. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P050xx codes.