U0290 Diagnostic Trouble Code

U0290 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 U0290 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
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.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

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. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code U0290 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 U0290.

Fortunately, U0290 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0290 Trouble Code For Specific Cars

U0290 Ferrari 512 Intake Manifold Runner Control (Stuck Closed)
U0290 Honda J-vx
U0290 Raymond Mays 20 Fuel Volume Regulator Control Circuit High
U0290 Volkswagen Atlas Rear Wiper Select Switch "D" Short to Ground
U0290 Chevrolet Matiz EGI Glow Plug Primary Failure
U0290 Mercedes-benz C Class Air Flow Blend Door Driver Circuit Failure
U0290 Kia Capital Seat Rear Vertical Motor Memory Position Out of Range