PowertrainP0414
CautionSeverity: Caution - get it checked when you can
AIR System Switching Valve A Circuit Shorted
Key terms: Catalytic converter: cleans the exhaust gases · EGR: exhaust gas recirculation, which cuts harmful gases · EVAP: the system that traps fuel vapour · Oxygen sensor: measures oxygen in the exhaust gas · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
This range covers emissions control (EGR, EVAP, oxygen sensors and the catalytic converter), but some manufacturers also use P04 codes for oil-pressure, brake-fluid and coolant-level warnings.
2Common causes
- Clogged or faulty EGR valve
- EVAP system leak (hoses, canister, fuel cap)
- Faulty oxygen sensor
- Ageing catalytic converter
- Low oil, brake fluid or coolant (on some models)
- Wiring or connector fault
3Can I drive?
Do not assume this code is safe to drive. Check the description: if it names oil pressure, brake fluid, coolant, or a brake fault, stop safely and have it diagnosed before driving. Emissions-only codes (EGR, EVAP, catalyst) should still be checked before an emissions or roadworthiness inspection.
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 31
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0414 | Part Number Brand | Powertrain |
| BAIC Motor | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| Mercedes-Benz | P0414 | AIR System Switching Valve A Circuit Shorted SAE | Powertrain |
| BMW | P0414 | Short circuit to negative or open circuit Brand | Powertrain |
| BYD | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| Chery | P0414 | SLS Secondary Air Valve Control Circuit Short Circuit Brand | Powertrain |
| Daewoo | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| DFFS | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| DFFX | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| DFXK | P0414 | Secondary air valve control circuit short Brand | Powertrain |
| EOBD | P0414 | Litar injap penukaran sistem udara 'A' pintas Brand | Powertrain |
| Geely | P0414 | Control Unit Code Error Brand | Powertrain |
| GM | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| Great Wall | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| Hafei | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| Holden | P0414 | Secondary Air Injection Valve Control Circuit High Voltage Brand | Powertrain |
| Hyundai | P0414 | AIR System Switching Valve A Circuit Shorted SAE | Powertrain |
| Isuzu | P0414 | AIR System Switching Valve A Circuit Shorted SAE | Powertrain |
| Land Rover | P0414 | AIR System Switching Valve A Circuit Shorted SAE | Powertrain |
| Maserati | P0414 | Secondary Air Injection (AIR) system switching valve A circuit short Brand | Powertrain |
| Opel | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| Peugeot | P0414 | AIR System Switching Valve A Circuit Shorted SAE | Powertrain |
| Porsche | P0414 | AIR System Switching Valve A Circuit Shorted SAE | Powertrain |
| Saab | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| MG (SAIC) | P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted Brand | Powertrain |
| Smart | P0414 | AIR System Switching Valve A Circuit Shorted SAE | Powertrain |
| Sprinter | P0414 | AIR System Switching Valve A Circuit Shorted SAE | Powertrain |
| Subaru | P0414 | Sec. Air Combi Valve Relay Circuit 1 Brand | Powertrain |
| Tata | P0414 | Air Pump Relay Control - Short Circuit At Ground Brand | Powertrain |
| Toyota | P0414 | Air system switching valve 'A' circuit shorted Brand | Powertrain |
| Volkswagen | P0414 | Secondary air injection system valve (N112): shorted; Implausible signal 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 1
These 7-character codes are manufacturer-specific variants of P0414 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P041400 | Secondary air pump - short circuit to B+ Brand | Powertrain |
6Related codes
Browse Pxxx codes or P041xx codes.