P090B Diagnostic Trouble Code

P090B 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 P090B diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
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.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code P090B 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 P090B.

Fortunately, P090B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P090B Trouble Code For Specific Cars

P090B Bmw 3 Can Link ECM/INSTM Circuit / Network Malfunction
P090B Allard Palm Beach Air Bag Driver Inflator Circuit Resistance Low on Squib
P090B Suzuki Sx Mirror Driver Switch Assembly Circuit Failure
P090B Nissan Primera Crankshaft Position Camshaft Position Correlation (Bank 1 Sensor B)
P090B Volvo 123
P090B Lancia Lambda Speed Wheel Sensor RR Input Circuit Failure
P090B Kia Capital Seat Rear Vertical Motor Memory Position Out of Range