U0722 Diagnostic Trouble Code

U0722 is a kind of OBD-II Diagnostic U-Network 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 U0722 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
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.
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 :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code U0722 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 U0722.

Fortunately, U0722 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0722 Trouble Code For Specific Cars

U0722 Fiat Tempra Left Front Sensor Circuit Failure
U0722 International Harvester Travelall SCP (J1850) Invalid or Missing Data for Memory Storage
U0722 Hsv Maloo Ride Control RR Shock Actuator Circuit Failure
U0722 Honda S800 Recirculation Override Circuit Malfunction
U0722 Ginetta G40 Output Speed Sensor Circuit Malfunction
U0722 Steyr Type 50 Lamp Turn Signal Front Output Circuit Short To Battery
U0722 Vauxhall Vivaro Pressure Switch A Circuit Malfunction