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 Lexus Rx TFP Valve Position Switch Circuit/ Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery
B15A3 Daewoo Brougham Fuel Trim Malfunction (Bank 2)
B15A3 Fiat 507 Lamp Backup Switch Input Circuit Open
B15A3 Benz 11 Blower Fan Speed Circuit Range/Performance
B15A3 Audi Rs4 ASM Mode Circuit High
B15A3 Lada 1300 Shift Malfunction
B15A3 Overland 41 Double Lock Timeout Failure