B3404 Diagnostic Trouble Code

B3404 is a kind of OBD-II Diagnostic B-Body 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 B3404 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
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
Some aftermarket accessories and performance modifications

Repair Processes :

Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. 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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code B3404 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 B3404.

Fortunately, B3404 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3404 Trouble Code For Specific Cars

B3404 Ferrari 375 Intake Air Temperature Circuit Range/Performance Problem
B3404 Keller Super Chief Seat Passenger Memory Position Error
B3404 Paramount 1.5-litre Driver Side Crash Sensor Communication Fault (Non SCP)
B3404 Citroen Ak Floor Temperature Switch Circuit Malfunction
B3404 Mini 1000 Anti Theft System
B3404 Moretti 1000 Battery Saver Relay Coil Circuit Failure
B3404 Kieft 1100 Servo Motor Potentiometer Airintake Left Circuit Failure