B15A3 Diagnostic Trouble Code

B15A3 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 B15A3 diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code B15A3 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 B15A3.

Fortunately, B15A3 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B15A3 Trouble Code For Specific Cars

B15A3 Dacia Sandero Fuel Temperature Sensor B Circuit High Input
B15A3 Tata Sumo Mirror Passenger Vertical Switch Circuit Open
B15A3 Toyota Pod Panel Dim Switch Circuit Open
B15A3 Lancia Zeta Steering Column Lock Switch Circuit Failure
B15A3 Hyundai Satellite SCP (J1850) Invalid or Missing Data for Door Locks
B15A3 Toyota Sera Park/Neutral Switch Circuit Open
B15A3 Hyundai Coupe SCP (J1850) Invalid Data from GEM