P22B5 Diagnostic Trouble Code

P22B5 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 P22B5 diagnostic trouble code may include:

If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Corroded or damaged connector
Reduction in engine performance, especially at low RPM levels
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.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. 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.

Process Tips

Diagnostic trouble code P22B5 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 P22B5.

Fortunately, P22B5 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P22B5 Trouble Code For Specific Cars

P22B5 Oldsmobile Delmont Cylinder 8 Injector Circuit Low
P22B5 Toyota Brevis O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
P22B5 Tata Indica Mirror Passenger Vertical Feedback Potentiometer Circuit Failure
P22B5 Isuzu I-350
P22B5 Mercedes C 63 ABS Inlet Valve Coil Rear Circuit Failure
P22B5 Batten 3.6 B Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
P22B5 Warszawa Warszawa SCP (J1850) Invalid or Missing Data for Interior Environment