U0230 Diagnostic Trouble Code

U0230 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 U0230 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly

Possible Causes :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Faulty IMRC actuator relay (if equipped)

Repair Processes :

Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code U0230 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 U0230.

Fortunately, U0230 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0230 Trouble Code For Specific Cars

U0230 Renault Nepta Heated Backlite Relay Short To Battery
U0230 Jaguar X-300 Seat Driver Front Down Switch Circuit Short To Battery
U0230 Elva Gt Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector)
U0230 Volkswagen Karmann Cheetah Right Front Wheel Pressure Reduction Performance Problem
U0230 Land Rover Lr2 Steering VAPS II Circuit Loop Open
U0230 Renault Fregate Glow Plug Circuit High Input (Bank #1)
U0230 Moretti 850 Blend Door Failure