U0330 Diagnostic Trouble Code

U0330 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 U0330 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Reduction in engine performance, especially at low RPM levels

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.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code U0330 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 U0330.

Fortunately, U0330 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0330 Trouble Code For Specific Cars

U0330 Dkw F89 Idle Control System RPM lower Than Expected
U0330 De Soto Custom Hold Switch Circuit Malfunction
U0330 Daewoo Tacuma
U0330 Opel Tigra A Door Handle Right Front Short To Battery
U0330 Bugatti Type 38 Cylinder 10 Injector Circuit High
U0330 Caterham 120 Superlight Door Ajar Lamp Circuit Short To Ground
U0330 Lexus Ls 300 TCSPL Solenoid Circuit Malfunction