U0326 Diagnostic Trouble Code

U0326 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 U0326 diagnostic trouble code may include:

Fuel pressure too high
Diminished fuel efficiency
Rich or lean exhaust
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.
Faulty IMRC actuator relay (if equipped)

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. Look at the plug wires to make sure they are not burnt or laying on the exhaust. 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 U0326 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 U0326.

Fortunately, U0326 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0326 Trouble Code For Specific Cars

U0326 Audi S5 Audio Center Amp is not responding
U0326 Ford F150 Memory Set Switch Circuit Short To Battery
U0326 Lexus Minority Report Temperature Select Failure
U0326 Rover Metro
U0326 Lancia 037 Speed Wheel Mismatch
U0326 Eagle Summit Incorrect Gear Ratio
U0326 Volvo Pv SCP (J1850) Invalid or Missing Data for Engine Torque