U1419 Diagnostic Trouble Code

U1419 is a kind of OBD-II Diagnostic U-Network Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a U1419 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
Diminished fuel efficiency

Possible Causes :

The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Defective ECU strategies or components will prevent proper regeneration
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code U1419 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before U1419.

Fortunately, U1419 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U1419 Trouble Code For Specific Cars

U1419 Jaguar C-type Seat Driver Forward Circuit Open
U1419 Mazda Laputa Turbo Charger Bypass Valve Control Circuit
U1419 Porsche 1300 Front Echo Sensor Circuit Failure
U1419 Fiat 1400 Lack Of HO2S Switch - Adaptive Fuel At Limit
U1419 Maxwell Model A Transmission Range Sensor Circuit High Input
U1419 Rover Alvis Ignition Coil D Secondary Circuit Malfunction
U1419 Volkswagen Passat B6 Right Rear Turn Lamp Circuit Failure