U2776 Diagnostic Trouble Code

U2776 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 U2776 diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Faulty IMRC actuator/sensor

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. 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. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code U2776 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 U2776.

Fortunately, U2776 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U2776 Trouble Code For Specific Cars

U2776 Morgan Model Brake Fluid Level Sensor Input Open Circuit
U2776 Bmw R 1200 Gs Clutch position ckt short to battery
U2776 Sunbeam-talbot Rapier Master Cylinder Pressure Sensor Circuit Open
U2776 Oldsmobile Omega Damper High Side Front Circuit Short To Battery
U2776 Triumph Bonneville T100 Passenger's Seat Occupied Switch Circuit Short to Ground
U2776 Volvo V60 SCP (J1850) Invalid or Missing Data for External Access (Doors)
U2776 Alfa Romeo Gtv Air Bag Crash Sensor #1 Feed/Return Circuit Failure