P0BD3 Diagnostic Trouble Code

P0BD3 is a kind of OBD-II Diagnostic P-Powertrain 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 P0BD3 diagnostic trouble code may include:

Faulty or damaged wiring
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
Poor fuel economy
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.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. 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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code P0BD3 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 P0BD3.

Fortunately, P0BD3 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0BD3 Trouble Code For Specific Cars

P0BD3 Renault Trafic 2 HO2S Heater Control Circuit High (Bank 1 Sensor 3)
P0BD3 Fiat Stilo LED #1 Circuit Short to Battery
P0BD3 Mitsubishi Verada Barometer Pressure Circuit Malfunction
P0BD3 Noble M10 Cylinder 1 Misfire Detected
P0BD3 Riley 15 Hood Switch Circuit Open
P0BD3 Renault Vel Satis HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
P0BD3 Durkopp 16 Hp Immobilizer Code Word/ID Number Write Failure