B1BD3 Diagnostic Trouble Code

B1BD3 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 B1BD3 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

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)
An air leak forward of the DPF will change the sensor readings resulting in the code

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. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code B1BD3 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 B1BD3.

Fortunately, B1BD3 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1BD3 Trouble Code For Specific Cars

B1BD3 Mitsubishi Fto Autolamp Delay Decrease Circuit Short To Ground
B1BD3 De Dion Bouton 10 Hp HO2S Heater Resistance (Bank 1 Sensor 2)
B1BD3 Isuzu New Bellel
B1BD3 Bmw 316 Catalyst System Efficiency Below Threshold (Bank 1)
B1BD3 Volkswagen Iltis Right Front Center Sensor Circuit Fault
B1BD3 Toyota Curren O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
B1BD3 Daf Daffodil Gear Select position short to Battery