U200U Diagnostic Trouble Code

U200U 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 U200U diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code U200U 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 U200U.

Fortunately, U200U is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U200U Trouble Code For Specific Cars

U200U Chevrolet S-10 EIC Switch-2 Assembly Circuit Failure
U200U Porsche Cayenne Type 92a Fuel Pump Control Out Of Range
U200U Maserati Coupe Transmission Fluid Pressure Sensor/Switch D Circuit
U200U Mercury Messenger Air Suspension Rear Height Sensor High (SE) Signal Circuit Open
U200U Berkeley Bandit Booster Solenoid circuit Failure
U200U Chrysler Vip Exhaust Pressure Sensor Intermittent
U200U Rover 800 Ignition Coil D Primary Circuit Malfunction