B1D5B Diagnostic Trouble Code

B1D5B 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 B1D5B diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Fuel with a large percentage of sulfur will clog the DPF quickly

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 B1D5B 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 B1D5B.

Fortunately, B1D5B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1D5B Trouble Code For Specific Cars

B1D5B Chevrolet Nomad EGR Calibration Low
B1D5B Siata 1250 Intake Air Temperature Circuit Malfunction
B1D5B Adler 12 ABS Inlet Valve Coil RF Circuit Short To Ground
B1D5B Amc Gremlin Air Suspension Front Inflator Solenoid Output Circuit Failure
B1D5B Beijing Bj 212 B+ Supply To VCRM Fan Circuit Malfunction
B1D5B Porsche Carrera Gt Fuel Pulse In Range But Higher Than Expected
B1D5B Belsize 9 Hp Barometer Pressure Circuit Malfunction