B0454 Diagnostic Trouble Code

B0454 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 B0454 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 :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code B0454 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 B0454.

Fortunately, B0454 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0454 Trouble Code For Specific Cars

B0454 Smart Fortwo Ii Lamp Anti-Theft Indicator Circuit Failure
B0454 Mazda Brown Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To Battery
B0454 Saab 90 Ignition Run/Start Circuit Failure
B0454 Ac 10 A/C Refrigerant Temperature Circuit High
B0454 Wartburg 311 SCP (J1850) Invalid or Missing Data for Interior Lamp Outage
B0454 Peugeot 308 Ii EGR Drive Overcurrent
B0454 Nissan Fusion Clutch Position Sensor Circuit High Malfunction