B247A Diagnostic Trouble Code

B247A 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 B247A 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
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Process Tips

Diagnostic trouble code B247A 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 B247A.

Fortunately, B247A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B247A Trouble Code For Specific Cars

B247A Austin Allegro Autolamp Sensor Input Circuit Failure
B247A Mazda 323 Transmission Transfer Case Contact Plate 'C' Circuit Failure
B247A Dixi 3 IAT - B Sensor Intermittent
B247A Tamplin 8 Mirror Passenger Up Circuit Open
B247A Chevrolet Kingswood ECM Control Relay O/P Circuit Malfunction
B247A Citroen Nemo Fuel Pump Primary Circuit Malfunction
B247A Invicta Black SCP (J1850) Invalid or Missing Data for Navigation