B0430 Diagnostic Trouble Code

B0430 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 B0430 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

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. 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.

Process Tips

Diagnostic trouble code B0430 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 B0430.

Fortunately, B0430 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0430 Trouble Code For Specific Cars

B0430 Studebaker Hawk Lamp Turn Signal Right Circuit Short To Battery
B0430 Amc Hornet Air Suspension Front Inflator Solenoid Output Circuit Short To Battery
B0430 Ford Zx2 Motor Temperature Out of Range
B0430 Ssangyong Chairman LAMP DOME OUTPUT Circuit Short to Battery
B0430 Ford Lynx Mirror Driver Up Circuit Short To Ground
B0430 Gurgel Br-800 Passenger Sid, Side mount Airbag Circuit Short to Vbatt
B0430 Edsel Pacer Inertia Switch input Circuit Open