U0288 Diagnostic Trouble Code

U0288 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 U0288 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
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.
An air leak forward of the DPF will change the sensor readings resulting in the code

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 U0288 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 U0288.

Fortunately, U0288 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0288 Trouble Code For Specific Cars

U0288 Swallow Doretti Mk Mirror Driver/Passenger Switch Circuit Failure
U0288 Locomobile Junior Timing Reference High Resolution Signal A Too Many Pulses
U0288 Fiat Marea Lamp Turn Signal Left Circuit Failure
U0288 Mazda Rx-4 A Camshaft Position - Timing Over-Retarded (Bank 1)
U0288 Nissan Fairlady Clutch position ckt short to battery
U0288 Gmc Safari Park Brake Applied Warning Lamp Circuit Failure
U0288 Maserati 222 Transmission Automatic Hall Effect Sensor Power Circuit Short To Battery / 4WD Low Switch Circuit Electrical