PowertrainP1420
CautionSeverity: Caution - get it checked when you can
Secondary air injection valve circuit electrical malfunction
Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions
1What it means in plain English
The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.
2Common causes
- Sensor or actuator fault
- Wiring or connector fault
- Vacuum or intake leak
- Fuel or ignition problem
- Control module fault
3Can I drive?
Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.
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 26
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1420 | No description available | Powertrain |
| Mercedes-Benz | P1420 | No description available | Powertrain |
| BYD | P1420 | NO. 289 battery voltage sampling wire loop fault Brand | Powertrain |
| Chery | P1420 | Battery pack high voltage heater relay sticking Brand | Powertrain |
| Daewoo | P1420 | AIR pump switchover valve Brand | Powertrain |
| Daihatsu | P1420 | Intake constrictor control circuit open or short Brand | Powertrain |
| DFXK | P1420 | Exhaust gas temperature 1 above physical plausible range upper limit Brand | Powertrain |
| EOBD | P1420 | Gasspjeld Brand | Powertrain |
| Geely | P1420 | Secondary Air Injection Solenoid Valve (N112): Electr. Malfunction Brand | Powertrain |
| GM | P1420 | AIR pump switchover valve Brand | Powertrain |
| Great Wall | P1420 | Cylinder 1 exhaust gas highest temperature signal too strong Brand | Powertrain |
| Honda | P1420 | No description available | Powertrain |
| Isuzu | P1420 | No description available | Powertrain |
| Land Rover | P1420 | Catalyst temperature sensor Brand | Powertrain |
| Maserati | P1420 | No description available | Powertrain |
| Perodua | P1420 | Intake constrictor control circuit open or short Brand | Powertrain |
| Peugeot | P1420 | No description available | Powertrain |
| Proton | P1420 | No description available | Powertrain |
| Saab | P1420 | AIR pump switchover valve Brand | Powertrain |
| Smart | P1420 | No description available | Powertrain |
| Sprinter | P1420 | No description available | Powertrain |
| Subaru | P1420 | Fuel Tank Pressure Control Sol. Valve Circuit High Brand | Powertrain |
| Suzuki | P1420 | Evaporative emission system vent valve stuck open Brand | Powertrain |
| Tata | P1420 | Catalyst Diagnosis - Gas Mode Brand | Powertrain |
| Toyota | P1420 | Secondary air injection valve circuit electrical malfunction Brand | Powertrain |
| Volkswagen | P1420 | Secondary Air Injection Solenoid Valve (N112): Electr. Malfunction 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 16
These 7-character codes are manufacturer-specific variants of P1420 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P142000 | Fehler in der Plausibilisierung der Pol2 (Nacheinspritzung) Effizienz Brand | Powertrain |
| Peugeot | P142005 | No description available | Powertrain |
| Peugeot | P142006 | No description available | Powertrain |
| Peugeot | P142007 | No description available | Powertrain |
| Peugeot | P142008 | No description available | Powertrain |
| Peugeot | P142009 | No description available | Powertrain |
| Peugeot | P142010 | No description available | Powertrain |
| Peugeot | P142011 | No description available | Powertrain |
| Peugeot | P142012 | No description available | Powertrain |
| Peugeot | P142013 | No description available | Powertrain |
| Peugeot | P142014 | No description available | Powertrain |
| Peugeot | P142015 | No description available | Powertrain |
| Peugeot | P142016 | No description available | Powertrain |
| Peugeot | P142017 | No description available | Powertrain |
| Peugeot | P142018 | No description available | Powertrain |
| Peugeot | P142066 | No description available | Powertrain |
6Related codes
Browse Pxxx codes or P142xx codes.