U0228 Diagnostic Trouble Code

U0228 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 U0228 diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
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.
Fuel with a large percentage of sulfur will clog the DPF quickly

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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code U0228 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 U0228.

Fortunately, U0228 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0228 Trouble Code For Specific Cars

U0228 Buick Enclave Cylinder 7 Injector Circuit High
U0228 Saab 9-7x Ignition Tach Circuit Short To Battery
U0228 Hyundai Sonata
U0228 Mercury Mountaineer Iii Air Suspension Rear Inflator Solenoid Output Circuit Open
U0228 Opel Vivaro Door Lock Cylinder Circuit Failure
U0228 Ford Galaxy Ii Mirror Driver Horizontal Switch Circuit Short To Ground
U0228 Bmw 7 Climate Control A/C Pressure Switch Circuit Failure