P02B3 Diagnostic Trouble Code

P02B3 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 P02B3 diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Faulty IMRC actuator/sensor

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P02B3 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 P02B3.

Fortunately, P02B3 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P02B3 Trouble Code For Specific Cars

P02B3 Packard Super Driver Door Handle Circuit Open
P02B3 Lada S Shift Solenoid C Control Circuit High
P02B3 Infiniti Ex35 SCP (J1850) Invalid or Missing Data for Experimental #2
P02B3 Renault Mascott Headlamp Aim Output Relay Circuit Failure
P02B3 Abarth Otr 1000 A/C Post Heater Sensor Circuit Failure
P02B3 Bmw-isetta 611 Communication Link to Display and Switch Module Error
P02B3 Porsche 904 Front Wiper Motor Relay Circuit Short to Vbatt