B043E Diagnostic Trouble Code

B043E 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 B043E diagnostic trouble code may include:

The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Faulty or damaged wiring
Hesitation upon acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

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)
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. 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 B043E 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 B043E.

Fortunately, B043E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B043E Trouble Code For Specific Cars

B043E Nissan Be-1 Climate Control Recirculation Actuator Out of Limits
B043E Armstrong Siddeley 16 Air Suspension LR Height Sensor Circuit Failure
B043E Fiat Qubo Lamp Warning Relay Circuit Short To Battery
B043E Wartburg 311 SCP (J1850) Invalid or Missing Data for Interior Lamp Outage
B043E Amc Javelin Air Suspension Front Inflator Solenoid Output Circuit Short To Ground
B043E Mercedes Slk 350 Air Bag Driver Circuit Failure
B043E Audi A3 Ambient Air Temperature Sensor Range/Performance