B3598 Diagnostic Trouble Code

B3598 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 B3598 diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
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
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

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 all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code B3598 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 B3598.

Fortunately, B3598 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3598 Trouble Code For Specific Cars

B3598 Lancia Thesis Starter Disable Circuit
B3598 Chevrolet Two-ten
B3598 Nissan Otti Convertible Top Up/Down switch Fault
B3598 Mercedes B 170 ABS Hydraulic Pressure Differential Switch Input Short Circuit To Battery
B3598 Ford Ka Mirror Driver Right Short To Ground
B3598 Kia Retona Secondary Air Injection System Incorrect Flow Detected
B3598 Tesla 3 Misfire Rate Catalyst Damage Fault - Bank 1